**Co`ef*fi"cient** (?), a.

Cooperating; acting together to produce an effect.

*Co`ef*fi"cient*ly*, adv.

© Webster 1913.

**Co`ef*fi"cient**, n.

**1.**

That which unites in action with something else to produce the same effect.

**2.** [Cf. F. *coefficient*.] Math.

A number or letter put before a letter or quantity, known or unknown, to show how many times the latter is to be taken; as, 6x; bx; here 6 and b are **coefficients** of x.

**3.** Physics

A number, commonly used in computation as a factor, expressing the amount of some change or effect under certain fixed conditions as to temperature, length, volume, etc.; as, the **coefficient** of expansion; the **coefficient** of friction.

Arbitrary coefficient Math., a literal coefficient placed arbitrarily in an algebraic, expression, the value of the coefficient being afterwards determined by the conditions of the problem.

© Webster 1913.