intumescency

Noun	1.	intumescency - swelling up with blood or other fluids (as with congestion) Synonyms: intumescence
	2.	intumescency - the swelling of certain substances when they are heated (often accompanied by release of water) Synonyms: intumescence, swelling

haematoma, hematoma, intumesce, intumescence, lump, puffiness, swell, swell up, swelling, tumefy, tumesce