/ Dictionary / Index S subderivative: Meaning and Definition of Find definitions for: sub•de•riv•a•tive Pronunciation: (sub"di-riv'u-tiv), [key] — n. a word derived from a derivative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subdelirium subdiaconal Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language