Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
expiative is an adjective meaning "having power to atone for or offered by way of expiation or propitiation". It carries one recorded sense.
having power to atone for or offered by way of expiation or propitiation
“expiatory (or propitiatory) sacrifice”
Definitions, synonyms and semantic relations for expiative come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.