Pronunciation: (i-rupt'),[key] —v.i. 1. to burst forth: Molten lava erupted from the top of the volcano. 2. (of a volcano, geyser, etc.) to eject matter.
3. to break out of a pent-up state, usually in a sudden and violent manner: Words of anger erupted from her. 4. to break out in a skin rash: Hives erupted all over his face and hands. 5. (of teeth) to grow through surrounding hard and soft tissues and become visible in the mouth.
—v.t. 1. to release violently; burst forth with: She erupted angry words. 2. (of a volcano, geyser, etc.) to eject (matter).