Pronunciation: (kō"u-fish'unt), [key]
1. Math.a number or quantity placed (generally) before and multiplying another quantity, as 3 in the expression 3x.
2. Physics.a number that is constant for a given substance, body, or process under certain specified conditions, serving as a measure of one of its properties: coefficient of friction.
acting in consort; cooperating.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.