/ Dictionary / Index L linear differential equation: Meaning and Definition of Find definitions for: lin'ear differen'tial equa'tion Pronunciation: [key] — Math. Math. an equation involving derivatives in which the dependent variables and all derivatives appearing in the equation are raised to the first power. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. linear combination linear equation Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language