Used attributively (e.g., "fireproofing paint") to modify another noun.
Definitions
Intended for or relating to the process of making something resistant to fire. They ordered specialized fireproofing foam for the project.
fireproofinggerund / present participle Present-participle form of the verb "fireproof" functioning adjectivally (e.g., "fireproofing crew").
Definitions
Actively rendering something fire-resistant; engaged in fireproofing. The fireproofing crew inspected each beam carefully.