[ muhl-tuh-plahy-er ]
/ ˈmʌl təˌplaɪ ər /


a person or thing that multiplies.
Arithmetic. a number by which another is multiplied.
Physics. a device for intensifying some effect.

Origin of multiplier

late Middle English word dating back to 1425–75; see origin at multiply1, -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for multiplier

British Dictionary definitions for multiplier


/ (ˈmʌltɪˌplaɪə) /


a person or thing that multiplies
the number by which another number, the multiplicand, is multipliedSee also multiplicand
physics any device or instrument, such as a photomultiplier, for increasing an effect
  1. the ratio of the total change in income (resulting from successive rounds of spending) to an initial autonomous change in expenditure
  2. (as modifier)multiplier effects
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for multiplier



late 15c., agent noun from multiply.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for multiplier


[ mŭltə-plī′ər ]

The number by which another number is multiplied.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.