intumescence

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun swelling up with blood or other fluids (as with congestion)
noun the increase in volume of certain substances when they are heated (often accompanied by release of water)

See intumescent.

In the northern hemisphere, or at any rate in the part occupied by British America and the north of the United States, this phenomenon is explained by the flat conformation of the territories bordering on the pole, and on which there is no intumescence of the soil to oppose any obstacle to the north winds; here, in Lincoln Island, this explanation would not suffice. — The Mysterious Island, Jules Verne

intumescency

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