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lossy

[law-see, los-ee] /ˈlɔ si, ˈlɒs i/
adjective, Electricity.
1.
(of a material or transmission line) causing appreciable loss or dissipation of energy.
Origin of lossy
1945-1950
First recorded in 1945-50; loss + -y1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for lossy

lossy

/ˈlɒsɪ/
adjective
1.
(of a dielectric material, transmission line, etc) designed to have a high attenuation; dissipating energy: lossy line Compare lossless
Word Origin
C20: from loss
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for lossy
adj.

"characterized by loss," 1948, a term in electrical engineering, from loss + -y (2).

Online Etymology Dictionary, © 2010 Douglas Harper
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