D defs.my
Entry 2 senses Webster, 1913

Intumescence

· In·tu·mes·cence · IPA
01 n. The act or process of swelling or enlarging; also, the state of being swollen; expansion; tumidity; especially, the swelling up of bodies u…
  1. 1.
    The act or process of swelling or enlarging; also, the state of being swollen; expansion; tumidity; especially, the swelling up of bodies under the action of heat.
    “The intumescence of nations.” Johnson.
  2. 2.
    Anything swollen or enlarged, as a tumor.