GNU Collaborative International Dictionary of English

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Found one definition

1.       
   eruption , n. [L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. éruption. See Rupture.]
    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.
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   All Paris was quiet . . . to gather fresh strength for the next day's eruption.
   W. Irving.
   
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   That which bursts forth.
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   A violent exclamation; ejaculation.
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   He would . . . break out into bitter and passionate eruditions.
   Sir H. Wotton.
   
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   (Med.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc.
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