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speed dating
speed demon
speed dial
speed freak
speed garage
speed hump
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speed merchant
speed of light
speed of sound
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speed of light
speed of light


noun 
Definition:
 
speed light travels in vacuum: the constant and universal speed at which all electromagnetic radiation travels through a vacuum, 2.998 × 108 meters per second.
Symbol  c
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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