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fidelity

 
/fəˈdel·ɪ·t̬i/ n [U] (ACCURACY)

Definition

the degree to which a copy of something shows the true character of the original: The fidelity of the tape recording was so poor that you could not understand much of what was said.
(Definition of fidelity n (ACCURACY) from the Cambridge Academic Content Dictionary © Cambridge University Press)

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