/ Dictionary / Index S subtropical high: Meaning and Definition of Find definitions for: subtrop'ical high' Pronunciation: [key] — Meteorol. Meteorol. one of several highs, as the Azores and Pacific highs, that prevail over the oceans at latitudes of about 30 degrees N and S. Also calledCf.(def. 41). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subtropical subtropics Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language