/ Dictionary / Index Z zoa: Meaning and Definition of Find definitions for: zo•a Pronunciation: (zō'u), [key] — n. pl. of -zoa Pronunciation: [key] a combining form meaning “animals,” “organisms” of the kind specified by the initial element, used in the names of classes in zoology: Protozoa. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zo- Zoan Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language