| belemnite | (n) a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae |
| Belemnite | n. [ Gr. &unr_; dart, fr. &unr_; dart, fr. &unr_; to throw: cf. F. bélemnite. ] (Paleon.) A conical calcareous fossil, tapering to a point at the lower extremity, with a conical cavity at the other end, where it is ordinarily broken; but when perfect it contains a small chambered cone, called the phragmocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages. -- |
| Selenite | n. (Chem.) A salt of selenious acid. [ 1913 Webster ] |
| Selenite | n. [ L. selenites, Gr. &unr_;&unr_;&unr_;&unr_; (sc. &unr_;&unr_;&unr_;), from |
| In a fine crystalline form called selenite-- | ในรูปผลึกที่เรียกว่าเซเรไนต์ Air: Part 3 (2009) |
| selenite |
| Selenite | n. (Chem.) A salt of selenious acid. [ 1913 Webster ] |
| Selenite | n. [ L. selenites, Gr. &unr_;&unr_;&unr_;&unr_; (sc. &unr_;&unr_;&unr_;), from |
