/ Dictionary / Index S subtropical: Meaning and Definition of Find definitions for: sub•trop•i•cal Pronunciation: (sub-trop'i-kul), [key] — adj. bordering on the tropics; nearly tropical. pertaining to or occurring in a region between tropical and temperate; subtorrid; semitropical. —n. a subtropical plant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subtropical (Thesaurus) subtreasury subtropical high Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language