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eruptive

 - 2 dictionary results

e⋅rup⋅tive

[i-ruhp-tiv]
–adjective
1. bursting forth, or tending to burst forth.
2. pertaining to or of the nature of an eruption.
3. Geology. noting a rock formed by the eruption of molten material.
4. Pathology. causing or accompanied by an eruption or rash.
–noun
5. Geology. an eruptive rock.

Origin:
1640–50; < F éruptif. See erupt, -ive


e⋅rup⋅tive⋅ly, adverb
e⋅rup⋅tiv⋅i⋅ty, e⋅rup⋅tive⋅ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To eruptive
e·rupt   (ĭ-rŭpt')   
v.   e·rupt·ed, e·rupt·ing, e·rupts

v.   intr.
  1. To emerge violently from restraint or limits; explode: My neighbor erupted in anger over the noise.

  2. To become violently active: The volcano erupted after years of dormancy.

  3. To force out or release something, such as steam, with violence or suddenness.

    1. To break through the gums in developing. Used of teeth.

    2. To appear on the skin. Used of a rash or blemish.

v.   tr.
To force out violently.

[Latin ērumpere, ērupt- : ē-, ex-, ex- + rumpere, to break; see reup- in Indo-European roots.]
e·rup'tive adj., e·rup'tive·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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