accuracy; degree of accuracy
Refers to the degree or level of accuracy, often used in technical or evaluative contexts.
The accuracy of this machine is very high.
Evaluate the accuracy of the translation.
精度 also means 'precision' or 'accuracy', but is more common in engineering and scientific contexts. 正確度 is slightly broader and can be used for non-technical evaluations.
Compound of 正確 (accurate) + 度 (degree). The exact historical derivation is uncertain, but the word follows a common pattern for forming nouns indicating a measurable quality.