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   plu·to·nism

   /ˈplo͞otnˌiz(ə)m/

   noun

   • 1. the formation of intrusive igneous rock by solidification of magma beneath the earth's surface.
   • ▪ the theory (now accepted) that rocks such as granite were formed by solidification from the molten state, as proposed by Scottish geologist James Hutton and others, rather than by precipitation from the sea.

   Scrabble Points: 13

   • P

     3

   • L

     1

   • U

     1

   • T

     1

   • O

     1

   • N

     1

   • I

     1

   • S

     1

   • M

     3

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