noun, noun or participle which takes 'suru', intransitive verb
eruption; volcanic eruption
Used as a noun or as the intransitive suru verb 噴火する for a volcano erupting. Common in news, geology, and disaster-related contexts.
火山が突然噴火した。
The volcano suddenly erupted.
噴火で町に火山灰が降っ
Volcanic ash fell on the town because of the eruption.