† methylosisn.
Geology. Obsolete. rare.
Chemical metamorphism or metasomatism.
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methylosis1878
1878 G. H. Kinahan Man. Geol. Irel. 177 A third class of Metamorphism..is due to the introduction and action of chemical substances from without; it has been called Methylosis.
1879 Proc. Royal Soc. 29 215 Methylosis is to rocks the same as pseudomorphism to minerals.
1893 A. Geikie Text-bk. Geol. iv. viii. 596 (note) Methylosis, methylotic,..applied to chemical metamorphism or alteration of constitution or substance.
Derivatives
methylotic adj. relating to or produced by chemical metamorphism.
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the world > the earth > structure of the earth > formation of features > metamorphism > [adjective] > methylosis
methylotic1878
1878 G. H. Kinahan Man. Geol. Irel. 188 Some of the beds have been subjected to methylotic action... Some of which seem to be methylotic rocks.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online June 2018).
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n.1878