Meaning of ASSOCIATIVE in English
adj.1 of or involving association.
2 Math. & Computing involving the condition that a group of quantities connected by operators (see OPERATOR 4) gives the same result whatever their grouping, as long as their order remains the same, e.g. (a x b) x c a x (b x c).
Oxford English vocab. Оксфордский английский словарь. 2012