Definition of "="

(mathematics) The equal sign. It asserts that two quantities or expressions have the same value.

1. (mathematics, computing theory, abuse of notation, with big O notation) Is. Used to state the relation that the growth rate of the expression on the left side of the sign is bounded or limited by that of the expression on the right.  examples

(chemistry) A double bond; a chemical bond between two chemical elements involving four bonding electrons instead of the usual two.  examples

(programming) The assignment operator. It assigns a value to a variable.  examples

(programming) An operator that compares if two values are equal. In some languages, == is used instead.  examples

(lexicography) The same form as the headword.  examples

(lexicography) Indicates synonyms of a word.  examples

(Hittitology) Indicates morpheme boundaries in bound transcription of Hittite terms with clitics.

(Chinese bronze script) A ditto mark.  examples

(informal) The same as; equal to.  examples