intumescence

Noun
  1. Swelling up with blood or other fluids (as with congestion) (synset 114341147)
    is a type of: lump, puffiness, swelling - an abnormal protuberance or localized enlargement
    subtypes: haematoma, hematoma - a localized swelling filled with blood
    same as: intumescency
  2. The increase in volume of certain substances when they are heated (often accompanied by release of water) (synset 113522751)
    is a type of: chemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
    same as: intumescency, swelling

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