Breadcrumb Home > Dictionary Search Cite Meaning of time zone Find definitions for: time' zone" Pronunciation: [key] one of the 24 regions or divisions of the globe approximately coinciding with meridians at successive hours from the observatory at Greenwich, England. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. timeworn timid Related Content Daily Word Quiz: effluvium Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language