Simple Definition of erupt
: to send out rocks, ash, lava, etc., in a sudden explosion; also : to come out in a sudden explosion
: to happen or begin suddenly and violently
: to begin doing something (such as shouting or applauding) suddenly
Full Definition of erupt
1 a (1) : to burst from limits or restraint (2) of a tooth : to emerge through the gum b : to force out or release suddenly and often violently something (as lava or steam) that is pent up c : to become active or violent especially suddenly : break forth <war could erupt at any moment> <the audience erupted in applause>
2 : to break out with or as if with a skin eruption
: to force out or release usually suddenly and violently <a volcano erupting lava and ash>
Examples of erupt
The volcano erupted with tremendous force.
A bitter dispute has erupted among the members of the team.
Origin of erupt
Latin eruptus, past participle of erumpere to burst forth, from e- + rumpere to break — more at reave
First Known Use: 1657
Seen and Heard
What made you want to look up erupt? Please tell us where you read or heard it (including the quote, if possible).