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waterproofing

[ waw-ter-proo-fing, wot-er- ]
/ ˈwɔ tərˌpru fɪŋ, ˈwɒt ər- /
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noun

a substance by which something is made waterproof.
the act or process of making something waterproof.

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Origin of waterproofing

First recorded in 1835–45; waterproof + -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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