‖n. [ F. anatron, natron, Sp. anatron, natron, fr. Ar. al-natrūn. See Natron, Niter. ] [ Obs. ] 1. Native carbonate of soda; natron. [ 1913 Webster ]
2. Glass gall or sandiver. [ 1913 Webster ]
3. Saltpeter. Coxe. Johnson. [ 1913 Webster ]
n. [ F., fr. Sp. natron, Ar. natrūn, nitrūn. Cf. Niter, Anatron. ] (Min.) Native sodium carbonate. [ Written also anatron. ] [ 1913 Webster ]