Noun intumescency has 2 senses
  1. intumescence, intumescency - swelling up with blood or other fluids (as with congestion)
    --1 is a kind of swelling, puffiness, lump
    --1 has particulars: hematoma, haematoma
    Derived form: verb intumesce2
  2. intumescence, intumescency, swelling - the swelling of certain substances when they are heated (often accompanied by release of water)
    --2 is a kind of chemical process, chemical change, chemical action
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