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opah
opal
opalesce
opalescent
opaline
opaque
opaque projector
ope
OPEC
Opelousas
open
open account
open admissions
open adoption
open-air
open-and-shut
open bar
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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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