noun, noun which may take the genitive case particle 'no'
heat-resistant; heatproof
Describes materials, containers, or equipment designed to withstand high temperatures. Often used as a noun or with の to modify another noun.
この容器は耐熱ガラスでできている。
This container is made of heat-resistant glass.
耐熱温度は300度です。
The heatproof temperature is 300 degrees.
Compound of 耐 (たい, 'withstand') and 熱 (ねつ, 'heat').