Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| agamic | nonsexual. |
| agamically | (Adv.) AGAMIC, nonsexual. |
| agamogenesis | reproduction by nonsexual means. |
| agamogenetic | reproducing by agamogenesis, reproduction by nonsexual means, |
| agamogony | asexual reproduction in protozoans characterised by multiple fission. |
| agamous | nonsexual. |
| alecithal | of an ovum, having little or no yolk. |
| allogamy | cross-fertilization. |
| ambisexual | of sexual characteristics, common to both sexes, eg pubic hair; (noun) one of indeterminate sex. |
| ambosexual | common to both sexes. |
| amplexus | (Lat.) the rutting of frogs and toads. |
| anamniote | any vertebrate animal, such as a fish or amphibian, that lacks an amnion. |
| anamniotic | of or like an anamniote, any vertebrate aninal, such as a fish or amphibian, that lacks an amnion. |
| androgenous | having only male offspring. |
| androgyny | hermaphroditism. |
| anestrous | relating to anestrus, a period of sexual inactivity between periods of estrus. |
| anestrum | (Lat.) a period of sexual inactivity between periods of oestrus. |
| anestrus | (Lat.) a period of sexual inactivity between periods of oestrus. |
| anisogamy | union between markedly different gametes eg as egg and sperm, as in humans. |
| anoestrous | relating to anoestrus, a period of sexual in activity between periods of oestrus. |
| anoestrum | (Greek) a period of sexual inactivity between periods of oestrus. |
| anoestrus | (Greek) a period of sexual inactivity between periods of oestrus. |
| anovular | not involving ovulation. |
| anovulation | a failure to produce eggs or to discharge them from an ovary. |
| antenatal | before birth (noun) an examination during pregnancy |
| antenatally | (Adv.) ANTENATAL, before birth. |
| antherozoid | a motile male gamete produced in an antheridium. |
| antherozooid | a motile male gamete produced in an antheridium. |
| antimitotic | an agent that inhibits or disrupts mitosis. |
| antipill | opposed to the use of oral contraceptives. |
| aplanogamete | a nonmotile gamete. |
| apomict | an organism reproducing by, or formed by, apomixis, nonsexual reproduction from an unfertilized ovum. |
| apomictic | relating to apomixis, nonsexual reproduction, from an unfertilized ovum. |
| apomictical | relating to apomixis, nonsexual reproduction, from an unfertilized ovum. |
| apomictically | (Adv.) APOMICTICAL, relating to apomixis, nonsexual reproduction, from an unfertilized ovum. |
| apomixis | (Greek) nonsexual reproduction, from an apomict or unfertilized ovum. |
| archenteric | relating to the archenteron; as, archenteric invagination. |
| archenteron | in the developing embryo, the primitive gut. |
| arrhenotoky | giving birth only to boys. |
| asexual | of reproduction, involving only one parent; it usually produces genetically identical offspring. |
| asexuality | the state of being asexual. |
| asexually | (Adv.) ASEXUAL, of reproduction, involving only one parent. |
| aspermia | failure to produce sperm. |
| asynapsis | a failure of the pairing of homologous chromosomes in meiosis. |
| atokal | without offspring. |
| atoke | the sexless part in certain polychaete worms. |
| atokous | without offspring. |
| autogamic | self-fertilizing. |
| autogamous | self-fertilizing. |
| autogamy | self-fertilization. |
| autogenesis | spontaneous generation. |
| autogenetic | relating to autogenesis. |
| autogenous | self-generated. |
| autogenously | (Adv.) AUTOGENOUS, self-generated. |
| autogeny | spontaneous generation. |
| autosexing | (The act of) self-sexing. |
| begetter | one who begets. |
| binovular | relating to or derived from two different ova. |
| biovular | derived from two ova. |
| biparous | bringing forth two offspring at a birth. |
| birthrate | the proportion of live births to population. |
| blastema | the protoplasmic part of an ovum, distinguished from the yolk. |
| blastemal | relating to the blastema, the protoplasmic part of an ovum. |
| blastematic | of or like a blastema. |
| blastemic | of or like a blastema, the protoplasmic part of an ovum. |
| blastogenic | related to blastogenesis, reproduction by budding. |
| capacitation | the change undergone by sperm in the female reproductive tract that enables them to penetrate and fertilize an egg. |
| childbed | (Arch.) the state of a woman giving birth. |
| childbirth | the act of giving birth. |
| chondrocranium | the cartilaginous parts of an embryonic cranium. |
| chordamesoderm | the layer of specialized cells in the middle of a developing embryo which forms the notochord and structures of the central nervous system. |
| chorial | relating to the chorion, the outer foetal envelope. |
| chorion | (Greek) the outer foetal envelope. |
| chorionic | relating to the chorion, the outer foetal envelope. |
| clon | a group of asexually derived organisms. |
| clonal | relating to a clone. |
| clonally | (Adv.) CLONAL, relating to a clone. |
| clone | a group of two or more individuals with identical genetic makeup derived, by asexual reproduction, from a single common parent or ancestor; (verb) to form a clone. |
| cloner | one who clones. |
| conception | the process of becoming pregnant involving fertilization or implantation or both. |
| conceptional | capable of conceiving. |
| conceptus | (Lat.) the products of conception; the developing foetus and surrounding tissue in the uterus. |
| copulation | the act of copulating. |
| copulatory | relating to copulation. |
| crossbreed | to hybridize. |
| deuterotoky | parthenogenesis in which both males and females are produced. |
| diakinesis | the final stage of prophase in meiosis. |
| dicentric | a chromosome having two centromeres. |
| diestrous | in a sexually inactive state following ovulation. |
| diestrum | a period of sexual inactivity. |
| diestrus | a period of sexual inactivity. |
| digenesis | the ability to alternate sexual and asexual means of reproduction. |
| digoneutic | breeding twice a year. |
| digoneutism | the state of being digoneutic, producing offspring twice yearly. |
| dioecism | the condition of being dioecious, having male and female sexual organs in different individuals. |
| dioestrus | a period of sexual inactivity. |
| ditokous | producing two at a birth or in a clutch. |
| dizygous | developed from two fertilized ova. |
| ectoplasm | the outer transparent layer of protoplasm in a developing ovum. |
| ectoplastic | relating to ectoplasm. |
| emboly | the formation of a gastrula by invagination of the blastula. |
| embryo | the entity which develops in a woman's womb until it is born as a baby, esp up to about eight weeks, after which it is known as a foetus. |
| embryogenesis | the production of an embryo. |
| embryogenetic | relating to embryogenesis. |
| embryogenic | relating to embryogeny. |
| embryogeny | the production and development of an embryo. |
| embryon | (Arch.) an embryo. |
| embryonal | of or like an embryo. |
| embryonic | of or like an embryo. |
| embryonically | (Adv.) EMBRYONIC, of or like an embryo. |
| embryotic | of or like an embryo. |
| embryotically | (Adv.) EMBRYOTIC, of or like an embryo. |
| enwomb | to conceive in the womb. |
| epigamic | of or relating to a trait or behavior that attracts a mate eg big antlers. |
| epigenesis | the theory of embryonic development. |
| epigenesist | an adherent of epigenesis, a theory of embryonic development. |
| epimere | in an embryo, the part of the mesoderm that divides to form the dermatome and myotomes. |
| ergatoid | a wingless but sexually perfect worker. |
| estrous | pertaining to estrus, a period of sexual excitement and ovulation in animals. |
| estrual | pertaining to estrus, a period of sexual excitement and ovulation in animals. |
| estrum | (Lat.) a period of sexual excitement and ovulation in animals. |
| estrus | (Lat.) a period of sexual excitement and ovulation in animals. |
| exoplasm | the outer transparent layer of protoplasm in a developing ovum. |
| fetal | relating to a foetus. |
| fetiparous | of marsupials, such as the kangaroo, giving birth to incompletely developed offspring. |
| fetus | (Lat.) the young animal in the egg or in the womb, after its parts are distinctly formed. |
| fissiparism | the state of being fissiparous. |
| fissiparity | the state of being fissiparous. |
| fissiparous | producing new biological units or individuals by fission, as with most strains of bacteria. |
| fissiparousness | the state of being fissiparous. |
| foetal | relating to a foetus. |
| foetation | the formation of a foetus in the womb. |
| foetiparous | of marsupials, such as the kangaroo, giving birth to incompletely developed offspring. |
| foetus | (Lat.) the young animal in the egg or in the womb, after its parts are distinctly formed. |
| frogspawn | the gelatinous egg mass of a frog. |
| funiculus | (Lat.) the umbilical cord. |
| gametal | of or like a gamete. |
| gamete | a reproductive cell which fuses with another gamete to form a zygote. |
| gametic | of or like a gamete. |
| gametically | (Adv.) GAMETIC, of or like a gamete. |
| gametocyte | a cell that divides to produce gametes. |
| gametogenesis | the formation of gametes. |
| gametogenic | relating to gametogenesis. |
| gametogenous | relating to gametogenesis. |
| gametogeny | the formation and maturation of gametes. |
| gametophyte | the haploid stage in the life cycle of an organism undergoing alternations of generations. |
| gametophytic | of or like a gametophyte. |
| gamic | sexual; sexually produced. |
| gamogenesis | sexual reproduction. |
| gamogenetic | relating to gamogenesis, sexual reproduction. |
| gamone | any chemical substance secreted by a gamete that attracts another gamete during sexual reproduction. |
| gamotropic | relating to gamotropism, the tendency of gametes to attract one another. |
| gamotropism | the tendency of gametes to attract each other. |
| gastrula | (Lat.) an embryo at the stage in which it forms a two-layered cup by the invagination of its wall. |
| gastrular | of or like a gastrula, an embryo at the stage in which it forms a two-layered cup by the invagination of its wall. |
| geniture | begetting, birth. |
| gestate | to carry in the womb. |
| gestation | the process of gestating, bearing in the womb. |
| gestational | relating to gestation, the process of gestating, bearing in the womb. |
| gestative | relating to gestation, the process of gestating, bearing in the womb. |
| gestatory | (Arch.) relating to carrying. |
| gonium | an immature reproductive cell. |
| gonosome | individuals, collectively, in a colonial animal that are involved with reproduction. |
| gravid | pregnant. |
| gravidity | the state of being gravid; pregnancy. |
| gravidly | (Adv.) GRAVID, pregnant. |
| gravidness | the state of being gravid. |
| gynandrism | the state of being gynandrous. |
| gynogenesis | reproduction in which a sperm penetrates an ovum but their nuclei do not fuse, and the embryo develops with maternal chromosomes only. |
| gynogenetic | relating to gynogenesis, reproduction in which a sperm penetrates an ovum but their nuclei do not fuse. |
| hatch | to bring forth young from an egg. |
| hatcher | one who hatches. |
| heterogametic | having a dissimilar pair of sex chromosomes. |
| heterogonous | reproducing both sexually and asexually. |
| heterogonously | (Adv.) HETEROGONOUS, reproducing both sexually and asexually. |
| heterozygosis | the mixed ancestry of heterozygotes. |
| hologamy | the state of having gametes of the same size and form as other cells. |
| homoblastic | derived from similar cells; showing direct embryonic development. |
| homogamic | breeding like with like, inbreeding. |
| homogenesis | a mode of reproduction in which the offspring is like the parent, and passes through the same cycle of existence. |
| homogenetic | homogeneous. |
| homogenetical | homogeneous. |
| homozygosis | the condition of being a homozygote. |
| homozygote | an organism or cell having the same alleles for a particular inherited characteristic. |
| implacental | having no placenta. |
| imposex | the superimposition of male sexual characteristics onto female gastropods, caused by certain pollutants. |
| impregnation | the act of making pregnant. |
| inbreed | to breed closely related stock. |
| incrossbred | a plant or animal produced by crossing two inbred individuals of different breeds. |
| infecund | unfruitful; not producing young. |
| infecundity | the state of being infecund. |
| intersex | an individual developing anatomical characteristics of both sexes. |
| intersterile | incapable of producingoffspring by interbreeding. |
| issueless | having no issue or progeny; childless. |
| iteroparity | the state of being iteroparous. |
| iteroparous | reproducing more than once in a lifetime. |
| kind | disposed to do good to others (noun) a sort or type; (verb, obs.) to beget |
| lactation | the act of suckling young; the period of milk secretion normally following childbirth. |
| lanugo | (Lat.) a woolly down, esp covering the human fetus. |
| macrogamete | the larger and usually female gamete of a heterogamous organism. |
| megagamete | the larger and usually female gamete of a heterogamous organism. |
| mesenchymal | relating to mesenchyme, the embryonic tissue from which circulatory, lymphatic, skeletal, and connective tissue develop. |
| mesenchymatous | relating to mesenchyme, the embryonic tissue from which circulatory, lymphatic, skeletal, and connective tissue develop. |
| mesenchyme | the embryonic tissue from which circulatory, lymphatic, skeletal, and connective tissue develop. |
| mesoderm | the layer of embryonic cells between the ectoderm and the endoderm in a gastrula. |
| mesogastrium | the mesentery supporting the embryonic stomach. |
| mesonephros | the second of the three segments of the embryonic kidney in vertebrates. |
| metafemale | a sterile female organism. |
| metamale | a sterile male organism. |
| metanephric | relating to the metanephros, the third of the three segments of the embryonic kidney in vertebrates. |
| metanephros | the third of the three segments of the embryonic kidney in vertebrates. |
| metestrous | relating to the metestrus, the period in the oestrous cycle following oestrus, characterized by lack of sexual activity. |
| metestrus | the short period following oestrus in many mammals during which sexual activity subsides. |
| metoestrous | relating to the metoestrus, the period in the oestrous cycle following oestrus, characterized by lack of sexual activity. |
| metoestrus | the period in the oestrous cycle following oestrus, characterized by lack of sexual activity. |
| microgametocyte | a gametocyte producing microgametes. |
| micropylar | of or like a micropyle, a micropore in ovum for spermatozoon. |
| milt | the soft roe of a fish (verb) of fish, to impregnate |
| milty | full of milt, the soft roe of a fish. |
| misbirth | (Arch.) an abortion. |
| monecian | having separate male and female flowers on the same plant. |
| monecious | having separate male and female flowers on the same plant. |
| moneciously | (Adv.) MONECIOUS, having separate male and female flowers on the same plant. |
| monestrous | of or related to mammals which experience one estrus (rut or period of heat) in a breeding season. |
| monoecism | the state or condition of being monoecious, having both male and female reproductive organs. |
| monogenesis | the development of an offspring from a parent like itself. |
| monogenous | of or pertaining to monogenesis; as, monogenous, or asexual, reproduction. |
| monogony | asexual reproduction. |
| monotocous | producing only one offspring at any one time; fruiting once only. |
| monozygotic | developed from one zygote only. |
| monozygous | developed from one zygote only. |
| morulation | the process of cleavage, or segmentation, of the ovum, by which a morula is formed. |
| multigravida | a woman pregnant for at least the third time. |
| multipara | a mother of two or more children. |
| multiparity | the state of being a multipara, giving birth to two or more offspring. |
| multiparous | having given birth to multiple children. |
| myomere | part of a vertebrate embryo. |
| nebenkern | (Ger.) a two-stranded helical structure of the proximal tail region of a spermatozoon. |
| nepionic | of or relating to the embryonic period of development. |
| neurula | (Lat.) an embryo at the stage succeeding the gastrula, when the neural tube develops from the neural plate. |
| neurular | of or like a neurula, an embryo at the stage succeeding the gastrula. |
| neurulation | the formation of a neurula. |
| nidate | to undergo nidation. |
| nidation | the process by which the blastocyst becomes attached to the wall of the uterus. |
| nonparous | having not given birth to any offspring. |
| nonsexual | having no distinction of sex. |
| nullipara | (Lat.) a woman with no children. |
| nulliparity | the state of being a nullipara. |
| octuplet | one of eight children born at one birth. |
| oestrual | pertaining to oestrus, a period of sexual excitement and ovulation in animals. |
| oestrum | (Lat.) a period of sexual excitement and ovulation in animals. |
| oestrus | (Lat.) a period of sexual excitement and ovulation in animals. |
| ontogenesis | the origin and development of a single individual organism. |
| oogamete | a female gamete. |
| oogamous | relating to oogamy, the union of dissimilar gametes. |
| oogamously | (Adv.) OOGAMOUS, relating to oogamy, the union of dissimilar gametes. |
| oogamy | the fertilization of oogamous gametes. |
| oogenesis | the enlargement and meiosis of an oogonium that produces an ovum. |
| oogenetic | relating to oogenesis, the enlargement and meiosis of an oogonium that produces an ovum. |
| oogeny | the enlargement and meiosis of an oogonium that produces an ovum. |
| oosperm | the ovum, after fusion with the spermatozoon in impregnation. |
| oosphere | a female gamete ready for fertilization. |
| ootid | one of four sections into which an ovum divides. |
| outreproduce | to surpass in reproducing. |
| oviferous | egg-carrying. |
| oviparity | the production of offspring via eggs. |
| oviparous | producing offspring through laying eggs which are incubated outside the body. |
| oviparously | (Adv.) OVIPAROUS, producing offspring through laying eggs which are incubated outside the body. |
| oviposit | to lay or deposit eggs, esp of insects. |
| oviposition | the act of ovipositing. |
| ovipositional | relating to oviposition. |
| ovisac | a brood-pouch; an egg capsule. |
| ovotestis | an organ which produces both ova and spermatozoa. |
| ovoviviparity | the state of being ovoviviparous. |
| ovoviviparous | producing eggs which are hatched in the parent's body. |
| ovoviviparously | (Adv.) OVOVIVIPAROUS, producing eggs which are hatched in the parent's body. |
| ovular | relating or belonging to an ovule. |
| ovulary | relating or belonging to an ovule. |
| ovulate | to produce ova. |
| ovulation | the act of releasing ova from the ovary. |
| ovulatory | relating to ovulation. |
| ovule | the structure inside an ovary which contains a female egg cell. |
| ovum | the female reproductive cell. |
| pachytene | the stage of the prophase of meiosis following zygotene. |
| paedogenesis | reproduction by an infant or larval organism. |
| paedogenetic | relating to paedogenesis, reproduction by an infant or larval organism. |
| paedogenic | of an animal, reproducing in the larval stage. |
| pangamic | relating to pangamy, random mating. |
| pangamy | (Greek) random or unrestricted mating. |
| panoistic | of an ovary, producing ova only, not yolk-forming cells, as opposed to meroistic. |
| parablast | the yolk of an egg, such as a hen's egg, that undergoes meroblastic cleavage. |
| parablastic | like a parablast. |
| parasexual | relating to reproduction that results in recombination of genes from different individuals. |
| parasexuality | the state of being parasexual. |
| parous | bearing or having borne offspring. |
| parthenogenesis | reproduction by a virgin or by means of an unfertilized egg. |
| parthenogenetic | reproducing by parthenogenesis, reproduction by a virgin or by means of an unfertilized egg. |
| parturiency | the condition of being ready to give birth. |
| parturient | about to bring forth young; (noun) one who is about to bring forth young. |
| parturition | the act of giving birth. |
| patroclinal | of animals and plants, showing the characters of the male parent. |
| patroclinous | of animals and plants, showing the characters of the male parent. |
| perigenesis | reproduction (according to the theory of Ernst Haeckel) by transmission not only of chemical material but of vibrations of plastidules. |
| perinatal | relating to the period between the seventh month of pregnancy and the first week of a baby's life. |
| perinatally | (Adv.) PERINATAL, relating to the period between the seventh month of pregnancy and the first week of a baby's life. |
| planogamete | a motile gamete. |
| pluripara | (Lat.) a mother of two or more children. |
| polytocous | producing many or several at a birth. |
| polyzoic | relating to a colony of zooids. |
| postcopulatory | taking place after copulation. |
| preborn | being carried in the womb, unborn. |
| precopulatory | preceding copulation. |
| preggers | (Sl.) pregnant. |
| preggy | (Coll.) pregnant. |
| pregnance | (Obs.) pregnancy. |
| pregnancy | the state of being pregnant. |
| previable | before the stage when a foetus has developed sufficiently to survive outside the womb. |
| primipara | (Lat.) a woman who bears a child for the first time. |
| primiparity | the bearing of one's first child. |
| procarp | a female sexual organ in certain algae. |
| procreate | to engender, beget offspring. |
| procreation | the act of procreating. |
| procreational | relating to procreation. |
| procreative | relating to procreation. |
| procreator | one who procreates. |
| proembryo | a group of cells formed in the dividing zygote, from which part the embryo arises. |
| proestrus | in mammals, the coming on of heat in the oestrus cycle. |
| progenitive | capable of bearing offspring. |
| progeniture | an act or instance of begetting. |
| puberty | the beginning of sexual maturity. |
| pubescent | arrived at puberty. |
| puerpera | (Lat.) a woman who has recently given birth. |
| quin | (Short for) a quintuplet. |
| quintuplet | one of five children born in one birth. |
| redia | (Lat.) a form in the life cycle of the trematodes. |
| remate | to mate again. |
| replicant | in science fiction, an artificially created or cloned biological creature, esp in human form. |
| reproduction | the manufacture of offspring as part of an organism's life cycle This is not the same as dispersal. |
| schizogenesis | reproduction by division. |
| schizogenetic | reproducing, reproduced, or formed by fission or splitting. |
| schizogenic | reproducing, reproduced, or formed by fission or splitting. |
| schizogonic | relating to schizogony. |
| schizogonous | reproducing by multiple fission. |
| schizogony | reproduction by division. |
| scissiparity | reproduction by fission. |
| self | one's own person (verb) to fertilize by the same individual |
| sell | to give up to another for money or other valuable consideration. |
| semelparity | the quality of having a single reproductive season and then dying. |
| semelparous | reproducing or breeding only once in a lifetime, like salmon. |
| semioviparous | bringing forth young in incomplete developmental state. |
| septuplet | one of seven children born together. |
| sextuplet | one of six children born in a multiple birth. |
| sexualise | to render sexual. |
| sperm | a male gamete. |
| spermatocyte | a cell producing spermatozoa. |
| spermatogenesis | the formation of spermatozoa. |
| spermatozoan | a male sex cell. |
| spermic | pertaining to sperm. |
| sporogony | the growth or development of an animal or a zooid from a nonsexual germ. |
| stillborn | a baby dead at birth. |
| stomatodaeum | in embryology, the invagination that forms the anterior part of the digestive tract. |
| stomodaeal | of or like a stomodaeum, in embryology, the invagination that forms the anterior part of the digestive tract. |
| stomodaeum | in embryology, the invagination that forms the anterior part of the digestive tract. |
| stomodeal | relating to the stomodeum, in embryology, the invagination that forms the anterior part of the digestive tract. |
| stomodeum | in embryology, the invagination that forms the anterior part of the digestive tract. |
| strobilate | to undergo strobilation. |
| strobilation | production or reproduction by strobilae, as in jellyfish. |
| strobilisation | production or reproduction by strobilae. |
| strobilization | production or reproduction by strobilae. |
| superfetate | to conceive when a fetus is already in the uterus. |
| superfetation | a second conception when there is already a fetus in the womb. |
| superfoetation | a second conception when there is already a fetus in the womb. |
| syngamous | relating to syngamy, free interbreeding. |
| syngamy | (Greek) the union of two gametes. |
| syngenesis | sexual reproduction. |
| syngenetic | relating to syngenesis, sexual reproduction. |
| thelytokous | producing only female offspring. |
| thelytoky | the parthenogenetic production of females only. |
| totipotency | the state of being totipotent, capable of development into a complete organ or embryo. |
| totipotent | capable of development into a complete organ or embryo. |
| unbeget | not to beget. |
| uniparous | producing only one offspring at birth. |
| univoltine | having one brood a year. |
| uterogestation | gestation in the womb. |
| viviparism | the bringing forth of live young. |
| viviparous | producing live young. |
| viviparously | (Adv.) VIVIPAROUS, producing live young. |
| viviparousness | the state of being viviparous. |
| voltinism | the number of broods typically produced per year by a population of a particular insect species. |
| xenogamous | relating to xenogamy, cross-fertilization. |
| xenogamy | cross-fertilization. |
| xenogenetic | relating to xenogeny, the supposed production of offspring totally different from the parents. |
| xenogenic | relating to xenogeny, the supposed production of offspring totally different from the parents. |
| xenogeny | the supposed production of offspring totally different from the parents. |
| zoogamete | a motile gamete. |
| zoogamous | of or pertaining to zoogamy, sexual reproduction of animals. |
| zoogamy | sexual reproduction of animals. |
| zoogonous | giving birth to live offspring. |
| zooid | an asexually produced organism resembling an animal. |
| zygose | pertaining to zygosis, the union of two gametes. |
| zygosis | (Greek) the union of two gametes. |
| zygosity | the state of being zygose, pertaining to the union of two gametes. |