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heaves
heavier-than-air
heavily
heaving
Heaviside layer
heavy
heavy breather
heavy chain
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heavy-water reactor
heav·y-wa·ter re·ac·tor (plural heav·y-wa·ter re·ac·tors)


noun 
Definition:
 
nuclear reactor: a nuclear reactor in which heavy water is used as a moderator
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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