n. 圆, 圆形, 球形

Roundness \Round"ness\, n.
1. The quality or state of being round in shape; as, the
roundness of the globe, of the orb of the sun, of a ball,
of a bowl, a column, etc.

2. Fullness; smoothness of flow; as, the roundness of a
period; the roundness of a note; roundness of tone.

3. Openess; plainess; boldness; positiveness; as, the
roundness of an assertion.

Syn: Circularity; sphericity; globosity; globularity;
globularness; orbicularness; cylindricity; fullness;
plumpness; rotundity.