Meaning of ASSOCIATIVE in English
1》 of or involving association.
2》 Mathematics involving the condition that a group of quantities connected by operators gives the same result in whichever order the operations are performed, as long as the order of the quantities remains the same, e.g. ( a × b ) × c = a × ( b × c ).
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004