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intumesce

American  
[in-too-mes, -tyoo-] / ˌɪn tʊˈmɛs, -tyʊ- /

verb (used without object)

intumesced, intumescing
  1. to swell up, as with heat; become tumid.

  2. to bubble up.


intumesce British  
/ ˌɪntjʊˈmɛs /

verb

  1. (intr) to swell or become swollen; undergo intumescence

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of intumesce

1790–1800; < Latin intumēscere to swell up, equivalent to in- in- 2 + tumēscere, equivalent to tum ( ēre ) to swell + -ēscere -esce