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arc secant
arc second
arc sine
arc tangent
arc welding
arcade
arcade game
Arcadia (1)
Arcadia (2)
Arcadian
arcana
arcane
arcanum
arccosec
arccot
-arch
Arch.
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Archaean
Ar·chae·an


noun,

adjective 
Definition:
 
geology 
Another spelling of  Archean
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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