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trona
Trondheim
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troop carrier
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troostite
troost·ite [ tr stt ]


noun 
Definition:
 
form of willemite: a grayish or reddish manganese-containing form of the mineral willemite
[Mid-19th century. After Gerard Troost (1776-1850), U.S. geologist]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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