/ Dictionary / Index S subclassify: Meaning and Definition of Find definitions for: sub•clas•si•fy Pronunciation: (sub-klas'u-fī"), [key] — -fied, -fy•ing. to arrange in subclasses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subclass subclavate 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