approximation
n. countablen. an estimate that is close to the real value but not exact. You use it when the precise number or answer is unknown or unnecessary.
n. a value or statement that is nearly correct but not exact; an estimate derived from available data rather than precise measurement.
The map shows an approximation of the distance.
The budget is only an approximation since we do not know the final costs.
In theoretical physics, the model serves as a useful approximation, though it simplifies complex quantum interactions for the sake of clarity.
Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Latin proximō Latin approximō Latin approximātusder. Middle English approximat English approximate Proto-Indo-European *-tisder. Proto-Italic *-tjō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English -ion English approximation From approximate + -ion.