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radiation pressure
radiation sickness
radiation therapy
radiational cooling
radiative collision
radiative forcing
radiator
radical
radical chic
radical sign
radicalise
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radicalize
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radiant flux
ra·di·ant flux


noun 
Definition:
 
rate of energy flow: the rate of flow of radiant energy.
Symbol  Φe
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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