Definition of "non-flammable" []

• Not flammable; not inflammable; not able to burn easily (adjective)

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• "In one video, a worker brushed a soot-covered wall of the mine to reveal a white surface of non-flammable crushed limestone known as rock dust."
• "In fact, the 5' 9 destructive device mounted on a satellite dish is so powerful, despite the cost, that anything its focus immediately bursts into flame, including normally non-flammable materials like rocks."
• "Modern roof coating materials use either solvents or water-based (non-flammable) mixtures that are not heated and, therefore, are easier to apply."