pneumatolysis

American

[noo-muh-tol-uh-sis, nyoo-] / ˌnu məˈtɒl ə sɪs, ˌnju- /

noun

Geology.

the process by which rocks are altered or minerals and ores are formed by the action of vapors given off by magma.

pneumatolysis British

/ ˌnjuːməˈtɒlɪsɪs /

noun

a type of metamorphism in which hot gases from solidifying magma react with surrounding rock

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

pneumatolitic

adjective
pneumatolytic

adjective

Etymology

Origin of pneumatolysis

First recorded in 1895–1900; pneumato- + -lysis

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023