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roll-off

[rohl-awf, -of] /ˈroʊlˌɔf, -ˌɒf/
noun
1.
Electronics. the rate of loss or attenuation of a signal beyond a certain frequency.
2.
Aeronautics. the tendency of an airplane to lower one wing under varying conditions of flight.
Origin
noun use of verb phrase roll off
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for roll off

roll off

verb
1.
(intransitive, adverb) (electronics) to exhibit gradually reduced response at the upper or lower ends of the working frequency range
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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