ROTUNDITY
sphericity, sphericalness, globosity, globularness, rotundity, rotundness
(noun) the roundness of a 3-dimensional object
roundness, rotundity
(noun) the fullness of a tone of voice; “there is a musky roundness to his wordiness”
Source: WordNet® 3.1
Etymology
Noun
rotundity (countable and uncountable, plural rotundities)
The quality of being rotund.
Source: Wiktionary
Ro*tund"i*ty, n. Etym: [L. rotunditas: cf. F. rotondité.]
1. The state or quality of being rotu
Smite flat the thick rotundity o'the world! Shak.
2. Hence, completeness; entirety; roundness.
For the more rotundity of the number and grace of the matter, it
passeth for a full thousand. Fuller.
A boldness and rotundity of speech. Hawthorne.
Source: Webster’s Unabridged Dictionary 1913 Edition