- aff. a suffix of adjectives borrowed from Latin, where it had an inchoative force (convalescent; recrudescent); also used with the sense “giving off light" of the kind or in the manner specifiedfluorescent; iridescent[/ex]•Etymology: < L, s. of -ēscēns, prp. ending (see -esce, -ent); in sense “giving off light,” prob. extracted from incandescent
From formal English to slang. 2014.