intumesce
1. [ verb ] move upwards in bubbles, as from the effect of heating; also used metaphorically
Synonyms: bubble_up
Examples:

"Gases bubbled up from the earth" "Marx's ideas have bubbled up in many places in Latin America"

Related terms: surface
2. [ verb ] expand abnormally
Synonyms: swell tumefy distend tumesce swell_up
Examples:

"The bellies of the starving children are swelling"

Related terms: expand blister bloat puff distend belly swelling tumefaction
Similar spelling:   intumescency
  intumescence
  in_time
  indument
  indium
  indumentum