Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
post-maturity is a noun meaning "the state in which women have stopped ovulating". It carries one recorded sense.
the state in which women have stopped ovulating
Definitions, synonyms and semantic relations for post-maturity come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.