An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) An act, process, or instance of erupting; something that is erupted or ejected.
2) → flare.
3) Geology: The ejection of molten rock, steam, etc., as from a volcano or geyser.

Verbal noun of → erupt.

The explosive ejection of superheated matter from a → volcano.

→ volcanic; → eruption.