/ Dictionary / Index Z zein: Meaning and Definition of Find definitions for: ze•in Pronunciation: (zē'in), [key] — n. a soft, yellow powder of simple proteins obtained from corn, used chiefly in the manufacture of textile fibers, plastics, and paper coatings. a synthetic fiber produced from this protein. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ZEG Zeist Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language