Ebullition is a noun that refers to the action of bubbling or boiling. 

The Latin word ebullire (ee boo LEAR ay) means ‘to boil up.’ Our word of the day may be used in the literal sense of referring to water boiling, or it may be used figuratively, to refer to someone’s temper boiling over and exploding. Example:

When I told Sandy that she’d parked in the wrong space, I wasn’t expecting an ebullition of rage. I knew she’d be a little unhappy, but I had no idea she had such a violent temper regarding her car.