Definition of "intumescent" [in•tu•mes•cent]

• That becomes swollen, especially upon exposure to heat (adjective)

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• "Because of its foaming effect in case of a fire, it is also referred to as "intumescent"."
• "Such alternative materials could have been spray-on nano-thermites substituted for intumescent paint or Interchar-like fireproofing primers (NASA 2006)."
• "I do not advise trephining in the secondary glaucoma following intumescent cataract, for in such cases the semi-fluid lens bulges into and blocks the trephine hole."