/ Dictionary / Index S simultaneous equations: Meaning and Definition of Find definitions for: simulta'neous equa'tions Pronunciation: [key] — Algebra. Algebra. a set of two or more equations, each containing two or more variables whose values can simultaneously satisfy both or all the equations in the set, the number of variables being equal to or less than the number of equations in the set. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. simultaneous sin 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