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Metamorphic rock
noun
Definitions
Noun
- 1 one of the major groups of rock that makes up the crust of the Earth; consists of pre-existing rock mass in which new minerals or textures are formed at higher temperatures and greater pressures than those present on the Earth's surface. countable, uncountable
- 2 rock altered by pressure and heat wordnet
See also for "metamorphic rock"
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