/ Dictionary / Index S socio-: Meaning and Definition of Find definitions for: socio- Pronunciation: [key] a combining form used, with the meanings “social,” “sociological,” or “society,” in the formation of compound words: sociometry; socioeconomic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Socinus sociobiology Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language