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De - Pt| English Dictionary: Neptunian theory | by the DICT Development Group |
| 1 result for Neptunian theory | |
| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Neptunian \Nep*tu"ni*an\, a. [L. Neptunius belonging to Neptune: cf. F. neptunien.] 1. Of or pertaining to the ocean or sea. 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. | |
