plutonism

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English[edit]

Etymology[edit]

Pluto +‎ -ism, after the classical ruler of the underworld.

Noun[edit]

plutonism (countable and uncountable, plural plutonisms)

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Wikipedia

  1. The old geological theory that the rocks forming the Earth were formed in fire by volcanic activity, with a continuing gradual process of weathering and erosion, then deposited on the sea bed, re-formed into layers of sedimentary rock by heat and pressure, and raised again.

Synonyms[edit]