Nep·tune prop. n.
1. Rom. Myth. The son of Saturn and Ops, the god of the waters, especially of the sea. He is represented as bearing a trident for a scepter.
2. Astron. The remotest major planet of our solar system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. It is classed as a gas giant, and has a radius of 22,716 km and an estimated mass of 1.027 x 10
Neptune powder, an explosive containing nitroglycerin, -- used in blasting.
Neptune's cup Zool., a very large, cup-shaped, marine sponge (Thalassema Neptuni).
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