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Definition of Nonflammable
1. Adjective. Impossible to ignite.
Definition of Nonflammable
1. Adjective. Not combustible. ¹
2. Adjective. Not easily set on fire. ¹
3. Noun. Any nonflammable substance. ¹
¹ Source: wiktionary.com
Definition of Nonflammable
1. [adj]