'Intumescence' definitions:

Definition of 'intumescence'

From: WordNet
noun
Swelling up with blood or other fluids (as with congestion) [syn: intumescence, intumescency]
noun
The increase in volume of certain substances when they are heated (often accompanied by release of water) [syn: intumescence, intumescency, swelling]

Definition of 'Intumescence'

From: GCIDE
  • Intumescence \In`tu*mes"cence\, n. [Cf. F. intumescence.] [1913 Webster]
  • 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. [1913 Webster]
  • The intumescence of nations. --Johnson. [1913 Webster]
  • 2. Anything swollen or enlarged, as a tumor. [1913 Webster]