Now updated for CSW15. New words, if any, and new inflections of existing words, are shown in red.

apostrophus |
(Lat.) the backwards C symbol used in Roman numerals. |

del |
a mathematical symbol, aka nabla. |

lemniscate |
an oval shape with two symmetrical loops across a central node (as the figure 8), used as the symbol for infinity. |

nabla |
(Greek) in Cartesian coordinates, an inverted delta, also called del, representing a vector operator. |

operator |
a symbol that represents a mathematical function. |

operatorless |
without an operator. |

placeholder |
a symbol in a mathematical or logical expression that may be replaced by the name of any element of a set. |

singulary |
of an operator, monadic. |

vincular |
of or like a vinculum, a unifying bond. |

vinculum |
(Lat.) a horizontal line placed above a part of an equation, etc, equivalent to brackets. |