methylosis Geol.
(mɛθɪˈləʊsɪs)
[f. Gr. µετα- meta- + ὕλη matter: see -osis.]
Change of matter or composition. Hence methyˈlotic a., pertaining to or produced by methylosis.
| 1878 Kinahan 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. Ibid. 188 Some of the beds have been subjected to methylotic action... Some of which seem to be methylotic rocks. 1893 Geikie Text-bk. Geol. iv. viii. 596 note, Methylosis, methylotic,..applied to chemical metamorphism or alteration of constitution or substance. |