rounding

pyöristysvirhe Round or nearly round; becoming round; roundish.
The act of rounding a mathematical value.
The numerical value obtained by this process.
The act of making anything round, as the lips in pronouncing some vowels.
A rounded surface; a curve.
1860, Journal of the Society of Arts (volume 8, page 292)

In the early Egyptian works, the relief was low, the surface flat, and but little if any attempt was made to show the roundings of the human figure, or to exhibit the inflexion of the human form.