Geology. Produced by or involving the action of water, esp. in the sea. Now chiefly in neptunian dyke n. at compounds.

Geology. Of or pertaining to water as an agent; produced by the action of water.

Geology. Applied to the theory which explained certain geological phenomena by reference to a general deluge, or to periods of catastrophic…

= Neptunian, adj. 2.

= Neptunian, adj. 2. Now rare except in neptunic dike n. at compounds.

Of, pertaining to, or of the nature of a torrent; produced by the action of a torrent.

pertaining to or produced by the action of both rivers and lakes.

Of a mineral, deposit, etc.: formed by the (chemical) action of water.

formed or acted upon by glacial ice or water.

pertaining to or produced by the action of streams which have their source in glacial ice, or the combined action of rivers and glaciers.

Physical Geography. Denoting features and phenomena resulting from the solvent action of water, as solution basin, solution depression, solution subsi…

Formed in, occurring in, or inhabiting shallow water near the sea.