intumesce

in·tu·mesce  (nt-ms, -ty-)

intr.v. in·tu·mesced, in·tu·mesc·ing, in·tu·mesc·es

1. To swell or expand; enlarge.

2. To bubble up, especially from the effect of heating.

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[Latin intumscere : in-, intensive pref.; see in-² + tumscere, to begin to swell, inchoative of tumre, to swell; see teu- in Indo-European roots.]

Thesaurus

Verb	1.	intumesce - move upwards in bubbles, as from the effect of heating; also used metaphorically; "Gases bubbled up from the earth"; "Marx's ideas have bubbled up in many places in Latin America" bubble up rise up, surface, come up, rise - come to the surface
	2.	intumesce - expand abnormally; "The bellies of the starving children are swelling" swell up, tumesce, tumefy, swell distend - swell from or as if from internal pressure; "The distended bellies of the starving cows" expand - become larger in size or volume or quantity; "his business expanded rapidly" belly, belly out - swell out or bulge out puff out, puff up, puff, blow up - to swell or cause to enlarge, "Her faced puffed up from the drugs"; "puffed out chests" bloat - become bloated or swollen or puff up; "The dead man's stomach was bloated" blister, vesicate - get blistered; "Her feet blistered during the long hike"