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The definition of fidelity

5 Definitions of: fidelity

    1. noun, devotion to duties, obligations, etc; faithfulness
    2. noun, loyalty or devotion, as to a person or cause
    3. noun, faithfulness to one's spouse, lover, etc
    4. noun, adherence to truth; accuracy in reporting detail
    5. noun, electronics the degree to which the output of a system, such as an amplifier or radio, accurately reproduces the characteristics of the input signal. See also high fidelity
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From Collins