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double-hung
double indemnity
double jeopardy
double-jointed
double knit
double knitting
double life
double magnum
double negation
double negative
double obelisk
double occupancy
double or nothing
double over
double-page spread
double-park
double play
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double negation
dou·ble ne·ga·tion


noun 
Definition:
 
negation of negation: in logic, the principle that a proposition and the negation of its negation mean one and the same thing
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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