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erupt

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eruptˈrʌpt/verb
eruptseruptederupting
erupt
ˈrʌpt/
verb
eruptseruptederupting
Learner's definition of ERUPT  
[no object]
: to send out rocks, ash, lava, etc., in a sudden explosion
also  : to come out in a sudden explosion — + from
: to happen or begin suddenly and violently
: to begin doing something (such as shouting or applauding) suddenly — usually + in, into, or with
: to appear suddenly on the skin
of a tooth  : to come out through the gum

— eruption

ˈrʌpʃən/nounpluraleruptions
[count]
[noncount]

— eruptive

ˈrʌptɪv/adjective,technical
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