/ Dictionary / Index Z zeta: Meaning and Definition of Find definitions for: ze•ta Pronunciation: (zā'tu, zē'-), [key] — n. the sixth letter of the Greek alphabet (Z, &zgr;). the consonant sound represented by this letter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zeta (Thesaurus) zesty Zethar Related Content Daily Word Quiz: charlatan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language