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