单词 | plumbogummite |
释义 | plumbogummite/ˌplʌmbəʊˈɡʌmʌɪt/Mineralogy noun A mineral of the trigonal crystal system consisting of a hydrated basic phosphate of lead and aluminium, PbAl3(PO4)2(OH)5.H2O, and occurring as translucent, resinous, greyish-white to reddish-brown masses. OriginMid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From plumbo- + classical Latin gummi gum + -ite, after French plomb-gomme plombgomme. |
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