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