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

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 of pneumatolysis

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

OTHER WORDS FROM pneumatolysis

pneu·mat·o·lyt·ic, pneu·mat·o·lit·ic [noo-mat-l-it-ik, nyoo-, noo-muh-tl-, nyoo-] /nʊˌmæt lˈɪt ɪk, nyʊ-, ˌnu mə tl-, ˌnyu-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pneumatolysis

/ (ˌnjuːməˈtɒlɪsɪs) /


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