'Neptunist' definitions:

Definition of 'Neptunist'

From: GCIDE
  • Neptunian \Nep*tu"ni*an\, Neptunist \Nep"tu*nist\, prop. n. [Cf. F. neptinien, neptuniste.] (Geol.) One who adopts the Neptunian theory. [1913 Webster]