SG Heritage Dictionary

Volcanist [Noun] Webster's Dictionary 1828

1. One versed in the history and phenomena of volcanoes.

2. One who believes in the effects of eruptions of fire in the formation of mountains.

Volcanist [Noun] Webster's Dictionary 1913

1. One versed in the history and phenomena of volcanoes.

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.