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Ookpik
oolite
oolong
oom
oompah
oomph
oomycete
oophorectomy
oophoritis
oops
Oort cloud
oose
oosphere
oospore
Oostende
ootid
ooze (1)
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op
op [ op ] (plural ops)


noun 
Definition:
 
operation: a surgical operation ( informal )

[Early 20th century. Shortening of operation]
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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