/ Dictionary / Index L linear combination: Meaning and Definition of Find definitions for: lin'ear combina'tion Pronunciation: [key] — Math. Math.(of mathematical quantities) a sum of products of each quantity times a constant:aX + bY + cZ is a linear combination of X, Y, and Z, where a, b, and c are constants. The expression Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Linear B linear differential equation 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