approximate value; approximation
Mathematical term for a value that is close to, but not exactly equal to, the true value. Used in contexts such as numerical analysis, rounding, and estimation.
3.14 is often used as an approximate value for pi.
In this calculation, please find the approximate value of the square root to three decimal places.
真値 (true value) is the exact, correct value, in contrast to 近似値 which is an estimate.
Compound of 近似 (approximation) + 値 (value). The word is a straightforward technical term formed from Sino-Japanese elements.