intumescence

The act or process of swelling or the condition of being swollen.

A swollen organ or body part.

The state or process of swelling or enlarging, as with heat; expansion; tumidity.

A swollen or tumid growth or mass; tumefaction.

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.

Anything swollen or enlarged, as a tumor.

the process of swelling up or the condition of being swollen

an instance of such swelling

swelling up with blood or other fluids (as with congestion)

the increase in volume of certain substances when they are heated (often accompanied by release of water)