Dictionary
co•var•i•ant
Pronunciation: (kō-vâr'ē-unt), [key]—
adj. Math.
(of one magnitude with respect to another) varying in accordance with a fixed mathematical relationship:
The area of a square is covariant with the length of a side. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.