'Volcanist' definitions:

Definition of 'Volcanist'

From: GCIDE
  • Volcanist \Vol"can*ist\, n. [Cf. F. volcaniste, vulcaniste.]
  • 1. One versed in the history and phenomena of volcanoes. [1913 Webster]
  • 2. One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; a vulcanist. Cf. Neptunist. [1913 Webster]