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Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
mitosis is a noun meaning "cell division in which the nucleus divides into nuclei containing the same number of chromosomes". It carries one recorded sense.
cell division in which the nucleus divides into nuclei containing the same number of chromosomes
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 mitosis come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.