Mūl'ti-plī'er, n.
n. 1. One who, or that which, multiplies, or increases number.
Sense 2. The number in arithmetic by which another is multiplied.
Sense 3. (Physics.) An instrument for multiplying or increasing by repetition the intensity of a force or action, particularly when feeble, so as to render it appreciable or measurable, as heat or galvanism. See THERMO-MULTIPLIER.