proofing

American  

[proo-fing] / ˈpru fɪŋ /

noun

1. the act or process of making a thing resistant, as in waterproof fabrics or fireproof material.

2. any chemical used in the manufacture of a substance to make it proof against water, fire, etc.

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Etymology

Origin of proofing

First recorded in 1900–05; proof + -ing ¹

Example Sentences

Existing state law requires landlords to maintain certain “standard characteristics” for a dwelling unit including adequate hot and cold running water, heat, and weather proofing.

From Los Angeles Times • Oct. 8, 2025

The Barrett campaign described this as a simple proofing screw-up and said that the team had been working off of a template used ahead of the state’s Aug. 6 primary.

From Slate • Oct. 19, 2024

But it went right to Gary so he could be proofing along the way.

From Salon • Nov. 24, 2023

Got a bread baker on your gift list? Etsy.com has sellers of personalized loaf pans; proofing and baking kits; patterned linen bread bags; and handmade baskets and crockery.

From Washington Times • Nov. 15, 2023

The only similarity between the rest of the town and the church is the small windows covered with iron bars, but the shambler proofing is barely noticeable on such an impressive building.

From "Dread Nation" by Justina Ireland