Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
tumescence is a noun meaning "tumidity resulting from the presence of blood or other fluid in the tissues". It carries one recorded sense.
tumidity resulting from the presence of blood or other fluid in the tissues
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for tumescence come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.