IPA: /ˈʌvənˌpruːf/
KK: /ˈʌvənˌpruf/
Able to be used in an oven without being damaged by heat.
I bought an ovenproof dish to bake my lasagna.
Ovenproof → It is formed from "oven" (from Old English *ofen*, meaning a chamber for baking or heating) and "proof" (from Old English *prūfian*, meaning to test or to make resistant). The word "ovenproof" means resistant to damage or able to withstand the heat of an oven.
Think of an 'oven' as a place for baking and 'proof' as making something resistant — that's why ovenproof means it can withstand the heat of an oven.