/ Dictionary / Index S subroutine: Meaning and Definition of Find definitions for: sub•rou•tine Pronunciation: (sub'r-tēn"), [key] — n. Computers. an instruction sequence in a machine or assembly language program that can be prewritten and referred to as often as needed. Cf.(def. 4a). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subroutine (Thesaurus) subround sub-Saharan 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