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.
reductionist is an adjective meaning "of or relating to the theory of reductionism". It carries one recorded sense.
of or relating to the theory of reductionism
“reductionist arguments”
Definitions, synonyms and semantic relations for reductionist come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.