Synesis
In linguistics, synesis (from Greek σύνεσις 'unification, meeting, sense, conscience, insight, realization, mind, reason') is a traditional grammatical/rhetorical term referring to agreement (the change of a word form based on words relating to it) due to meaning. A constructio kata synesin (Latin: constructio ad sensum) is a grammatical construction in which a word takes the gender or number not of the word with which it should regularly agree, but of some other word implied in that word.