/ Dictionary / Index S subsidiary: Meaning and Definition of Find definitions for: sub•sid•i•ar•y Pronunciation: (sub-sid'ē-er"ē), [key] — adj., n., pl. -ar•ies. —adj. serving to assist or supplement; auxiliary; supplementary. subordinate or secondary: subsidiary issues. of or pertaining to a subsidiary. —n. a subsidiary thing or person. See a subordinate theme or subject. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subsidiary (Thesaurus) subside subsidiary coin 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