What is the meaning of Rounding?

Round or nearly round; becoming round; roundish.

The act by which a numerical value is rounded.

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.

In bookbinding, the shaping of the folded and sewed sheets into a convex form at the back.

present participle and gerund of round

Source: wiktionary.org