multĭplĭcātor, ōris, m. [multiplico],
a multiplier (post-class.): herilium talentorum multiplicator, Paul. Nol. Ep. 44.—As math. t. t., the multiplier , Boëth. de Music. 2, 27 al.
·noun The number by which another number is multiplied; a multiplier. ...
Webster's Dictionary of the English Language