Neptunian
Neptunian , proper adjective
[Latin Neptunius belonging to Neptune: compare French neptunien.]
1.
Of or pertaining to the ocean or sea.
2.
(Geology) Formed by water or aqueous solution; as, Neptunian rocks.
Collocations (2)
Neptunian races (Ethnology) , the Malay and Polynesian races.
Neptunian theory (Geology) , the theory of Werner, which referred the formation of all rocks and strata to the agency of water; -- opposed to the Plutonic theory.
Neptunian , proper noun
[Compare French neptinien, neptuniste.]
(Geology) One who adopts the Neptunian theory.
Also: Neptunist