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