eruption

n. [ L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. éruption. See Rupture. ] 1. The act of breaking out or bursting forth; as: (a) A violent throwing out of flames, lava, etc., as from a volcano or a fissure in the earth's crust. (b) A sudden and overwhelming hostile movement of armed men from one country to another. Milton. (c) A violent commotion. [ 1913 Webster ]

All Paris was quiet . . . to gather fresh strength for the next day's eruption. W. Irving. [ 1913 Webster ]

2. That which bursts forth. [ 1913 Webster ]

3. A violent exclamation; ejaculation. [ 1913 Webster ]

He would . . . break out into bitter and passionate eruditions. Sir H. Wotton. [ 1913 Webster ]

4. (Med.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc. [ 1913 Webster ]