/ Dictionary / Index S subzone: Meaning and Definition of Find definitions for: sub•zone Pronunciation: (sub'zōn"), [key] — n. a subdivision of a zone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sub-zero suc Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language