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slough (1)
slough (2)
slough of despond
Slovak
Slovakia
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slow
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slow-wave sleep
slow-wave sleep


noun 
Definition:
 
sleep while not dreaming: a state of dreamless sleep characterized by slow brain waves and lowered heart rate, respiration, and blood pressure
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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