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arc cosine
arc cotangent
Arc de Triomphe
arc furnace
arc light
arc secant
arc second
arc sine
arc tangent
arc welding
arcade
arcade game
Arcadia (1)
Arcadia (2)
Arcadian
arcana
arcane
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arch-
arch-


prefix 
Definition:
 
1. chief, most important
archrival
2. extreme
archconservative
[Via Old French and Latin arche< Greek arkhi- "first, chief" (see archi-)]
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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