sub•sid•i•ar•yPronunciation: (sub-sid'ē-er"ē), [key]
—adj., n., pl. -ar•ies.
serving to assist or supplement; auxiliary; supplementary.
subordinate or secondary: subsidiary issues.
of or pertaining to a subsidiary.
a subsidiary thing or person.
See subsidiary company.
a subordinate theme or subject.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.