from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To swell or expand; enlarge.
- intransitive v. To bubble up, especially from the effect of heating.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To swell or enlarge (abnormally)
- v. To bubble up (as the result of heating)
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To enlarge or expand with heat; to swell; specifically, to swell up or bubble up under the action of heat, as before the blowpipe.
from The Century Dictionary and Cyclopedia
- To enlarge or expand, as with heat; swell up; become tumid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. expand abnormally
- v. move upwards in bubbles, as from the effect of heating; also used metaphorically
Latin intumēscere : in-, intensive pref.; see in-2 + tumēscere, to begin to swell, inchoative of tumēre, to swell; see teuə- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin intumēscō. (Wiktionary)