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russula
rust
rust belt
rust bucket
rust fungus
rust mite
rustic
rusticate
rusticle
rusticwork
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rut (1)
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ruta graveolens
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ruthenium
ru·the·ni·um [ roo thnee əm ]


noun 
Definition:
 
white metallic element: a brittle white metallic element. Source: platinum ores. Use: hardening of platinum and palladium alloys.
Symbol  Ru
[Mid-19th century. After Ruthenia]
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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