Webster's Online Dictionary
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Definition: EFFUSIVE ROCKS

Part of Speech Definition
Expression 1. (Geol.), volcanic rocks, in distinction from so-called intrusive, or plutonic, rocks. -- Ef*fu"sive*ly , adv. -- Ef*fu"sive*ness , n.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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Definition: EFFUSIVE ROCKS

Part of SpeechDefinition
Expression1. (Geol.), volcanic rocks, in distinction from so-called intrusive, or plutonic, rocks. -- Ef*fu"sive*ly , adv. -- Ef*fu"sive*ness , n.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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Common Expressions: EFFUSIVE ROCKS

ExpressionsDefinition
Effusive rocks(Geol.), volcanic rocks, in distinction from so-called intrusive, or plutonic, rocks. -- Ef*fu"sive*ly , adv. -- Ef*fu"sive*ness , n. Source: Webster's Revised Unabridged Dictionary.

Source: compiled by the editor from various references; see credits.

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Specialty Expressions: EFFUSIVE ROCKS

ExpressionsDomainDefinition
Effusive rocksGeographyA term applied to that class of igneous rocks derived from magmas or magmatic materials poured out or ejected at the earth's surface (i. e. volcanic rocks), as distinct from so-called intrusive or plutonic rocks that are injected at depth. Source: European Union. (references)

Source: compiled by the editor from various references; see credits.

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