NEPTUNIAN

neptunian. Neptunian, a. of or relating to the ocean or water

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Nep‐tu″ni‐an (?), a. [[L. Neptunius belonging to Neptune: cf. F. neptunien.]] 1. 1. Of or pertaining to the ocean or sea.
2. 2. (Geol.) Formed by water or aqueous solution; as, Neptunian rocks.
Neptunian races (Ethnol.), the Malay and Polynesian races. — Neptunian theory (Geol.), the theory of Werner, which referred the formation of all rocks and strata to the agency of water; — opposed to the Plutonic theory.