[ kraws-muhl-ti-plahy, kros- ]
/ ˈkrɔsˈmʌl tɪˌplaɪ, ˈkrɒs- /
verb (used without object), cross-mul·ti·plied, cross-mul·ti·ply·ing. Mathematics.
to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of both sides.
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Also cross multiply.
Origin of cross-multiply
First recorded in 1950–55
Related formscross-mul·ti·pli·ca·tion [kraws-muhl-ti-pli-key-shuh n, kros-] /ˈkrɔsˌmʌl tɪ plɪˌkeɪ ʃən, ˈkrɒs-/, cross multiplication, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for cross-multiply
To multiply the numerator of one of a pair of fractions by the denominator of the other.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.