Bible Dictionaries
Volcanist

Webster's Dictionary

(1):

(n.) One versed in the history and phenomena of volcanoes.

(2):

(n.) One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; a vulcanist. Cf. Neptunist.

Bibliography Information
Webster, Noah. Entry for 'Volcanist'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​v/volcanist.html. 1828.