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underlayment

American  
[uhn-der-ley-muhnt] / ˌʌn dərˈleɪ mənt /

noun

  1. material laid between a subfloor and a finish floor of linoleum, asphalt tile, etc.

Etymology

Origin of underlayment

First recorded in 1945–50; underlay + -ment

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.

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