- fidelity
[fidelity 词源字典]
- fidelity: see faith
[fidelity etymology, fidelity origin, 英语词源] - fidelity (n.)
- early 15c., "faithfulness, devotion," from Middle French fidélité (15c.), from Latin fidelitatem (nominative fidelitas) "faithfulness, adherence, trustiness," from fidelis "faithful, true, trusty, sincere," from fides "faith" (see faith). From 1530s as "faithful adherence to truth or reality;" specifically of sound reproduction from 1878.