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The Collaborative International Dictionary
Eruptive

Eruptive \E*rup"tive\, n. (Geol.) An eruptive rock.

Eruptive

Eruptive \E*rup"tive\, a. [Cf. F. ['e]ruptif.]

  1. Breaking out or bursting forth.

    The sudden glance Appears far south eruptive through the cloud.
    --Thomson.

  2. (Med.) Attended with eruption or efflorescence, or producing it; as, an eruptive fever.

  3. (Geol.) Produced by eruption; as, eruptive rocks, such as the igneous or volcanic.

Douglas Harper's Etymology Dictionary
eruptive

1640s; see erupt + -ive. Perhaps from French éruptif.\n

Wiktionary
eruptive

a. 1 That erupts or bursts forth. 2 Accompanied by eruptions. 3 (context geology English) Produced by eruption. n. An eruptive rock, one produced by eruption.

WordNet
eruptive
  1. adj. igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt; "volcanic rock includes the volcanic glass obsidian" [syn: volcanic]

  2. of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro [syn: irruptive, plutonic]

  3. erupting or tending to erupt; "a geyser is an intermittently eruptive hot spring"

Usage examples of "eruptive".

Sweet Elder-flowers are a valuable alterative, diuretic, mucous and glandular stimulant, excellent in eruptive, cutaneous, and scrofulous diseases of children.

Acute Catarrh also occurs during the initial stage of such eruptive diseases as measles, typhus, typhoid, erysipelas, etc.

The shrill outcry of Mrs Ruddle and Miss Twitterton was drowned by the eruptive rumble and boom that echoed from bend to bend of the forty-foot flue.

Although chronic catarrh is most commonly brought on in the manner above stated, it sometimes makes its appearance as a sequel of typhoid fever, scarlet fever, measles, or other eruptive fevers, or shows itself as a local manifestation of scrofulous or syphilitic taints in the system.

The Archean, composed of gneiss and crystalline schists, and traversed by eruptive veins, extends over the greater part of the Eastern Rumelian plain, the Rilska Planina, Rhodope, and the adjacent ranges.

This also makes a good drying powder for dusting on weeping eruptive sores between parts which approximate to one another, as the fingers, toes, and armpits.

She was a large woman, flushed and sweaty with an eruptive cheerfulness that neither her place of work nor her occasional appearance at petty sessions could long repress.