Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
intumescent is an adjective meaning "abnormally distended especially by fluids or gas". It carries one recorded sense.
Definitions, synonyms and semantic relations for intumescent come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.