Breadcrumb Home > Dictionary > Index Z zeroth: Meaning and Definition of Find definitions for: ze•roth Pronunciation: (zēr'ōth), [key] coming in a series before the first: the zeroth level of energy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zeroth (Thesaurus) zero-sum game zeroth law of thermodynamics TrendingHere are the facts and trivia that people are buzzing about. The Book of 1 Corinthians: Summary Current Events This Week: June 2023 Languages Spoken in Each Country of the World Aesop's Fables: Aesop's Fables Milestones in Environmental Protection The 12 Labors of Hercules (In Order) ✖ Related Content Daily Word Quiz: soupon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language