Definify.com
Webster 1913 Edition
eruption
e-rup′tion
,Noun.
[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.
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.
Webster 1828 Edition
Eruption
ERUP'TION
,Noun.
1.
The act of breaking or bursting forth from inclosure or confinement; a violent emission of any thing, particularly of flames and lava from a volcano. The eruptions of Hecla in 1783, were extraordinary for the quantity of lava discharged.2.
A sudden or violent rushing forth of men or troops for invasion; sudden excursion.Incensed at such eruption bold.
3.
A burst of voice; violent exclamation. [Little [used.]4.
In medical science, a breaking out of humors; a copious excretion of humors on the skin, in pustules; also, an efflorescence or redness on the skin, as in scarlatina; exanthemata; petechiae; vibices;as in small pox, measles and fevers.