E*rup"tion (?), 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 of 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.
All Paris was quiet . . . to gather fresh strength for
the next day's eruption.
W. Irving.
2. That which bursts forth.
3. A violent exclamation;
ejaculation.
He would . . . break out into bitter and passionate
eruditions.
Sir H. Wotton.
4. (Med.) The breaking out of pimples,
or an efflorescence, as in measles, scarlatina, etc.
