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-or (1)
-or (2)
OR (1)
OR (2)
or (1)
or (2)
OR circuit
OR gate
ora
ora et labora
orach
oracle
oracular
oracy
oral
oral contraceptive
oral history
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ora
o·ra
Definition:
 
biology 
Plural of  os1
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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