Dictionary
req•ui•site
Pronunciation: (rek'wu-zit), [key]—
adj.
required or necessary for a particular purpose, position, etc.; indispensable:
the requisite skills of an engineer.
—
n.
something requisite; a necessary quality, thing, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.