/ Dictionary / Index S subch.: Meaning and Definition of Find definitions for: subch. Pronunciation: [key] subchapter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subcentral subchairman 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