aff. a plural ending of nouns borrowed from Greek and Latin:II
phenomena; criteria; data-acvb aff. a feminine singular ending of nouns borrowed from Latin and Greek, also used in New Latin coinages to Latinize bases of any origin, and as a Latin substitute for the feminine ending -ē of Greek words:III
cinchona; pachysandra-acvb aff. a suffix occurring in the names of oxides of the chemical element denoted by the stem:
alumina; thoria•Etymology: prob. < -a of magnesia
From formal English to slang. 2014.