/ Dictionary / Index S subbing: Meaning and Definition of Find definitions for: sub•bing Pronunciation: (sub'ing), [key] — n. Photog. the act or process of applying a substratum. the material used for a substratum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subbing (Thesaurus) subbasement subbranch Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language