fi·del·i·ty
[fi-del-i-tee, fahy-]

–noun, plural -ties.
1.strict observance of promises, duties, etc.: a servant’s fidelity.

2. loyalty: fidelity to one’s country.

3. conjugal faithfulness.

4. adherence to fact or detail.

5. accuracy; exactness: The speech was transcribed with great fidelity.

6. Audio, Video . the degree of accuracy with which sound or images  are recorded or reproduced.