Longman Dictionary of Contemporary English homepage

Topic: GEOLOGY

Date: 1600-1700
Language: Latin
Origin: , past participle of erumpere 'to burst out'

erupt

verb
     
e‧rupt [intransitive]
1 if fighting, violence, noise etc erupts, it starts suddenly [= break out]:
Violence erupted after police shot a student during the demonstration.
A political row erupted over the MP's comments.
2HEG if a volcano erupts, it explodes and sends smoke, fire, and rock into the sky
3 if a place or situation erupts, there is a sudden increase in activity or emotion
erupt into
They were angry to the point of erupting into riot.
Their conversations often erupted into squabbles.
4

erupt into laughter/shouting etc

to suddenly start laughing, shouting etc:
He erupted into loud, desperate sobs.
5HBH if spots erupt on your body, they suddenly appear on your skin
eruption noun [uncountable and countable]
a volcanic eruption
the eruption of violence
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