/ Dictionary / Index S subtopic: Meaning and Definition of Find definitions for: sub•top•ic Pronunciation: (sub'top"ik, sub-top'-), [key] — n. a topic that is included within another topic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subtonic subtorrid Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language