Dictionary
bi•lin•e•ar
Pronunciation: (bī-lin'ē-ur), [key]—
adj. Math.
1. of, pertaining to, or having reference to two lines:
bilinear coordinates.
2. of the first degree in each of two variables, as an equation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.