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busywork
but
but-
but and ben
butadiene
butanal
butane
butanoic acid
butanol
butanone
butch
butch haircut
butcher
butcher knife
butcher’s broom
butcher’s knife
butcherbird
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busulfan
bu·sul·fan [ byoo súlfən ]


noun 
Definition:
 
drug to treat leukemia: a drug used in the treatment of some types of chronic leukemia
[Mid-20th century. Blend of butane, butyl + sulfonyl, sulfonate]
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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