单词 | potelot |
释义 | † potelotn. Chemistry. Obsolete. rare. Molybdenum disulphide. ΚΠ 1712 J. Browne tr. P. Pomet et al. Compl. Hist. Druggs II. ii. xxxii. 351/2 The third sort of Lead Oar is very much us'd, and 'tis that we call Black Lead, or Crayon... The Ancients gave it the name of Plumbago, and of Sea Lead..; Foreigners call it Potelot.] 1788 W. Nicholson tr. A.-F. de Fourcroy Elements Nat. Hist. & Chem. II. 392 Both [plumbago and molybdena], without distinction, were called lead ore, English crayon, plomb de mer,..talc-blende, potelot; this last name has been adopted by Mr. Daubenton, to denote molybdena. 1790 W. Nicholson tr. A.-F. de Fourcroy Elements Nat. Hist. & Chem. (new ed.) II. 202 When native potelot, or sulphure of molybdena, is exposed to fire in an open vessel, it exhales sulphur. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2020). < n.1788 |
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