精度（せいど、seido）
- precision

The Japanese word 精度 (せいど) generally translates to "accuracy," "precision," "fineness," or "performance." It refers to the degree of correctness or exactness of something. This can apply to various contexts, including measurements, calculations, machines, processes, and even the quality of information or data. 精度 implies a high level of fidelity to a standard or ideal. The higher the 精度, the closer the result is to the expected or desired value.

⚫︎この時計の精度は高い。 Translation: This watch has high accuracy. ⚫︎新しいソフトウェアは精度が向上した。 Translation: The new software has improved accuracy. ⚫︎実験の精度を上げるために、注意深く測定した。 Translation: I measured carefully to increase the accuracy of the experiment.

You can use 精度 in various situations. ⚫︎When discussing the reliability or exactness of measurements. ⚫︎When evaluating the performance of machines, equipment, or software. ⚫︎When assessing the quality of data or information. ⚫︎When emphasizing the importance of correctness or precision.

精度 is typically written in kanji as 精度. The reading is always せいど (hiragana). There are no variations in okurigana. It is not typically written in katakana.

⚫︎正確さ (せいかくさ) - accuracy, correctness ⚫︎精密さ (せいみつさ) - precision, fineness ⚫︎正確性 (せいかくせい) - accuracy, correctness ⚫︎高精度 (こうせいど) - high accuracy/precision

⚫︎不正確さ (ふせいかさ) - inaccuracy ⚫︎不精密さ (ふせいみつさ) - imprecision ⚫︎誤差 (ごさ) - error, deviation

このカメラは、精度の高いレンズを使っています。 ・Translation: This camera uses a high-precision lens. ・Explanation: The sentence highlights the high quality and exactness of the camera's lens, using 精度 to describe this quality.

彼の分析は、データの精度が低いせいで信頼できない。 ・Translation: His analysis is unreliable because the data's accuracy is low. ・Explanation: This sentence explains why his analysis is not good, because its data has a lower 精度.

The word 精度 is formed from the following: ⚫︎ 精 (せい): meaning "refined," "accurate," or "detailed." ⚫︎ 度 (ど): meaning "degree," "extent," or "level." Together, they create the meaning of "degree of accuracy" or "level of precision."