airproof

1 of 2

adjective

air·​proof

ˈer-¦prüf

1

: airtight

2

: made impervious to air

airproof

2 of 2

transitive verb

air·​proof

ˈer-¦prüf

1

: to make airtight

2

: to protect from the injurious action of air

Word History

Etymology

Adjective

air entry 3 + proof

First Known Use

Adjective

1758, in the meaning defined at sense 1

Transitive Verb

1857, in the meaning defined at sense 1

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