| 释义 |
natron|ˈneɪtrən, ˈnætrən|
[a. F. natron (1665), a. Sp. natron, ad. Arab. naṭrūn, niṭrūn, ad. Gr. νίτρον nitre. Cf. anatron.]
Native sesquicarbonate of soda, occurring in solution or as a deposit (mixed with other substances) in various parts of the world.
1684Leigh in Phil. Trans. XIV. 610 The Natron..is an Alkaly Salt perforated like a Sponge, and of a lixivial tast. 1706Phillips (ed. Kersey), Anatron or Natron, a kind of Salt drawn from the Water of the River Nile in Egypt. 1760Gentl. Mag. XXX. 315 The saltness of the dew in that country..is oweing to the natron,..which is in plenty on the surface of the earth. 1803Med. Jrnl. IX. 514 The stomachic affections were subdued by natron. 1863Baker Albert N'yanza i. (1866) I. 64 Found quantities of natron on the marshy ground bordering the river. 1872― Nile Trib. xvii. 304 The water is impregnated with natron.
b. attrib. in natron lake, a lake from which natron is obtained.
1821R. Jameson Man. Min. 6 It abounds..in the famous natron lakes in Northern Africa. 1876Harley Mat. Med. (ed. 6) 149 The natron lakes of Egypt were known to the ancients. |