[ muhl-tuh-plahy ]
See synonyms for: multiplymultipliedmultiplying on

verb (used with object),mul·ti·plied, mul·ti·ply·ing.
  1. to make many or manifold; increase the number, quantity, etc., of.

  2. Arithmetic. to find the product of by multiplication.

  1. to breed (animals).

  2. to propagate (plants).

  3. to increase by procreation.

verb (used without object),mul·ti·plied, mul·ti·ply·ing.
  1. to grow in number, quantity, etc.; increase.

  2. Arithmetic. to perform the process of multiplication.

  1. to increase in number by procreation or natural generation.

Origin of multiply

First recorded in 1225–75; Middle English multiplien, from Old French multiplier, from Latin multiplicāre; see multi-, ply2

Other words for multiply

Other words from multiply

  • self-mul·ti·plied, adjective
  • self-mul·ti·ply·ing, adjective
  • un·mul·ti·plied, adjective
  • un·mul·ti·ply·ing, adjective

Other definitions for multiply (2 of 3)

[ muhl-tuh-plee ]

  1. in several or many ways; in a multiple manner; manifoldly.

Origin of multiply

First recorded in 1880–85; multiple + -ly

Other definitions for multi-ply (3 of 3)

[ muhl-tee-plahy, muhl-tahy- ]

  1. having or composed of several plies: a multi-ply fabric.

Origin of multi-ply

First recorded in 1935–40 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use multiply in a sentence

British Dictionary definitions for multiply


/ (ˈmʌltɪˌplaɪ) /

verb-plies, -plying or -plied
  1. to increase or cause to increase in number, quantity, or degree

  2. (tr) to combine (two numbers or quantities) by multiplication

  1. (intr) to increase in number by reproduction

Origin of multiply

C13: from Old French multiplier, from Latin multiplicāre to multiply, from multus much, many + plicāre to fold

Derived forms of multiply

  • multipliable or multiplicable, adjective

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

Scientific definitions for multiply


[ mŭltə-plī′ ]

  1. To perform multiplication on a pair of quantities.

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