耐火 Traditional form: 耐火 Pinyin (reading): nàihuǒ Definitions: refractory (material) fire-resistant Characters: 耐 - to resist, to bear; patient, enduring 火 - fire, flame; to burn; anger, rage Traditional characters: 耐 - to resist, to bear; patient, enduring 火 - fire, flame; to burn; anger, rage