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Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
katabolism is a noun meaning "breakdown in living organisms of more complex substances into simpler ones together with release of energy". It carries one recorded sense.
breakdown in living organisms of more complex substances into simpler ones together with release of energy
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 katabolism come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.