say it: fuh-DEL-uh-tee
fidelity is a noun meaning "accuracy with which an electronic system reproduces the sound or image of its input signal". It carries 2 recorded senses.
accuracy with which an electronic system reproduces the sound or image of its input signal
the quality of being faithful
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fidelity come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.