Refers to the degree of exactness or correctness in measurement, calculation, or performance. Used in technical, scientific, and general contexts.
This machine can process parts with high precision.
To improve the accuracy of the experiment, we repeated the measurements many times.
This sensor's precision is very high.
We improved the algorithm to increase the precision.
This measuring instrument has low precision.
We calibrate regularly to maintain high precision.
正確 is a na-adjective meaning 'accurate/correct' describing a quality, whereas 精度 is a noun expressing the degree or level of that accuracy, e.g. in a measurement.
制度 (same reading, せいど) means 'system' or 'institution', while 精度 means 'precision/accuracy'; they are unrelated homophones distinguished only by kanji.
double-precision
single-precision
color accuracy; colour accuracy
high precision; high accuracy
accuracy of fire; firing accuracy
conversion accuracy; converted precision
operational precision; computational accuracy
quality control; QC
depth of indexing
Compound of 精 (sei, 'refined', 'detailed') and 度 (do, 'degree', 'measure'). The combination naturally yields the meaning 'degree of precision'.
data accuracy