/ Dictionary / Index A ancillary: Meaning and Definition of Find definitions for: an•cil•lar•y Pronunciation: (an'su-ler"ē or, esp. Brit., an-sil'u-rē), [key] — adj., n., pl. -lar•ies. —adj. subordinate; subsidiary. auxiliary; assisting. —n. something that serves in an ancillary capacity: Slides, records, and other ancillaries can be used with the basic textbook. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ancillary (Thesaurus) ancilla ancipital Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language