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Definitions and Synonyms of volcanic rock | Another word for volcanic rock | What is volcanic rock?

Definition 1: extrusive igneous rock solidified near or on the surface of the Earth - [noun denoting substance]

(volcanic rock is a kind of ...) rock formed by the solidification of molten magma

(... is a kind of volcanic rock ) volcanic rock consisting of large fragments fused together

(... is a kind of volcanic rock ) volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits

(... is a kind of volcanic rock ) a grey volcanic rock containing plagioclase and quartz and other crystalline minerals

(... is a kind of volcanic rock ) the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene

(... is a kind of volcanic rock ) a kind of natural glass produced when molten lava cools very rapidly

(... is a kind of volcanic rock ) rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface

(... is a kind of volcanic rock ) hard volcanic rock composed of compacted volcanic ash

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