Dictionary

weatherproof

adjective weath·er·proof \ˈwe-thər-ˌprüf\

: not able to be changed or damaged by the effects of the sun, wind, rain, etc.

: able to protect someone or something from the effects of the sun, wind, rain, etc.

Full Definition of WEATHERPROOF

:  able to withstand exposure to weather without damage or loss of function
weatherproof transitive verb
weath·er·proof·ness noun

Examples of WEATHERPROOF

  1. The material is weatherproof and will not rot from moisture.

First Known Use of WEATHERPROOF

circa 1620

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