pneumatolysis

[noo-muh-tol-uh-sis, nyoo-]

pneu·ma·tol·y·sis

[noo-muh-tol-uh-sis, nyoo-]
noun Geology.
the process by which rocks are altered or minerals and ores are formed by the action of vapors given off by magma.

Origin:
1895–1900; pneumato- + -lysis

pneu·mat·o·lyt·ic, pneu·mat·o·lit·ic [noo-mat-l-it-ik, nyoo-, noo-muh-tl-, nyoo-] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pneumatolysis is always a great word to know.
So is core. Does it mean:
portion of the earth's surface consisting of disintegrated rock and humus
central portion of the earth believed to be composed mainly of iron and nickel in a molten state
Collins
World English Dictionary
pneumatolysis (ˌnjuːməˈtɒlɪsɪs)
 
n
a type of metamorphism in which hot gases from solidifying magma react with surrounding rock

Collins English Dictionary - Complete & Unabridged 10th Edition
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