noun

Pronunciation:

[ə,səʊsɪə'tɪvɪti]

Meaning:

a property of a binary operation; if it holds, then with more than one of the same operator, the order of operations does not matter

Example:

if + is an associative operator, then for every three elements a, b, c it holds that a + (b + c) = (a + b) + c

Source:

https://simple.wikipedia.org/wiki/Associativity