intumesce (
http://definr.com/intumesce)
v 1: 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" [syn:
bubble up]
2: expand abnormally; "The bellies of the starving children are
swelling" [syn:
swell,
swell up,
tumefy]