mul·ti·ply 1 (mŭltə-plī′)
v. mul·ti·plied, mul·ti·ply·ing, mul·ti·plies
1. To increase the amount, number, or degree of. See Synonyms at increase.
2. Mathematics To perform multiplication on.
1. To grow in amount, number, or degree: Shops multiplied along the main street.
2. To increase in number by reproducing: "The people increased both in the dales and the plains, and their horses multiplied" (J.R.R. Tolkien).
3. Mathematics To perform multiplication.
[Middle English multiplien, from Old French multiplier, from Latin multiplicāre, from multiplex, multiplex; see MULTIPLEX.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.