1. One who, or that which, multiplies or increases number.

2. <mathematics> The number by which another number is multiplied. See the Note under Multiplication.

3. <physics> An instrument for multiplying or increasing by repetition or accumulation the intensity of a force or action, as heat or electricity. It is particularly used to render such a force or action appreciable or measurable when feeble. See Thermomultiplier.

Origin: Cf. F. Multiplier. Cf. Multiplicator.

(01 Mar 1998)