/ Dictionary / Index B bilinear: Meaning and Definition of Find definitions for: bi•lin•e•ar Pronunciation: (bī-lin'ē-ur), [key] — adj. Math. of, pertaining to, or having reference to two lines: bilinear coordinates. of the first degree in each of two variables, as an equation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bilinear (Thesaurus) biliary calculus bilinear form Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language