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allotment
allotransplant
allotrope
allotropy
allottee
allow
allowance
allowance for doubtful accounts
allowed band
allowed transition
allowedly
alloy
alloy steel
allspice
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allure
alluring
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allowed band
al·lowed band (plural al·lowed bands)


noun 
Definition:
 
range of possible electron energies: a range of energy levels that electrons may have in a solid
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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