fidelity /fəˈdɛləti/ noun Learner's definition of FIDELITY
[noncount]
1
a : the quality of being faithful to your husband, wife, or sexual partner(对丈夫、妻子或性伴侣的)忠贞,忠实,忠诚 —
often + to — opposite infidelity b : the quality of being faithful or loyal to a country, organization, etc.(对国家、组织的)忠诚 —
usually + to 2
: the degree to which something matches or copies something else准确度;忠实度—
+ to 3
: the degree to which a device (such as a CD player, radio, or television) correctly reproduces sounds, pictures, etc.(CD播放器、收音机、电视机等设备的)逼真度,保真度 — see also high fidelity