- eruption, eructation, extravasation - (of volcanos) pouring out fumes or lava (or a deposit so formed)
--1 is a kind of action, activity, activeness
Derived form: verb eruct1 - belch, belching, burp, burping, eructation - a reflex that expels wind noisily from the stomach through the mouth
--2 is a kind of reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction; expulsion, projection, ejection, forcing out
Derived form: verb eruct2