English
heteroassociation
From hetero- + association.
Formed from hetero- + association
Proto-Indo-European *sem- ‘one, whole’
Proto-Indo-European *sḿ̥teros
Proto-Hellenic *hə́teros
Ancient Greek ἕτερος ‘other, another, different’
English hetero-
Today it means
noun A complex (association) formed from two or more different compounds
Language periods are conventional ranges, not dates for this word.
Etymograph / heteroassociation