associationism associationalist • associationist · · · Info · Definitions · Synonyms · Characters · · associationism · · Text Latin · · Script 14 · · Length Definitions · · · (noun) (psychology) a theory that association is the basic principle of mental activity. Synonyms: association theory. · · Noun Definition 1 Synonyms · · · association theory · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074