Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
irruptive is an adjective meaning "of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro". It carries one recorded sense.
Definitions, synonyms and semantic relations for irruptive come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.