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