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cross-multiply

American  
[kraws-muhl-ti-plahy, kros-] / ˈkrɔsˈmʌl tɪˌplaɪ, ˈkrɒs- /
Also cross multiply

verb (used without object)

Mathematics.
cross-multiplied, cross-multiplying

  1. to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of both sides.

cross-multiply Scientific  

  1. To multiply the numerator of one of a pair of fractions by the denominator of the other.

Other Word Forms

  • cross multiplication noun
  • cross-multiplication noun

Etymology

Origin of cross-multiply

First recorded in 1950–55

Example Sentences

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Why do I love to cross-multiply?

From Slate

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.