[ weth-uh-rahyz ]
/ ˈwɛð əˌraɪz /

verb (used with object), weath·er·ized, weath·er·iz·ing.

to make (a house or other building) secure against cold or stormy weather, as by adding insulation, siding, and storm windows.
Also especially British, weath·er·ise.

Origin of weatherize

First recorded in 1940–45; weather + -ize
Related formsweath·er·i·za·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019