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orb weaver
orbicular
orbit
orbital
orbital space station
orbital space vehicle
orbiteering
orbiter
orca
Orcadian
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orca
or·ca [ áwrkə ] (plural or·cas)


noun 
Definition:
 
marine biology 
Same as  killer whale
[Mid-19th century. Via modern Latin< Latin "large sea creature"]
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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