noun, plural ro·tun·di·ties.
Examples from the Web for rotundity
The rotundity of the sounding-board may warrant this conjecture.Account of a Tour in Normandy, Vol. II. (of 2)|Dawson Turner
They can cipher and sew; have an idea of the rotundity of the earth, with some knowledge of the other countries beyond the sea.Brighter Britain! (Volume 1 of 2)|William Delisle Hay
On account of his rotundity he was compelled to hold the ankle in place in the firm clutch of his hand.Blow The Man Down|Holman Day
All his anger was reserved for those who still continued to believe in the earth's rotundity.Myths and Marvels of Astronomy|Richard A. Proctor
First came Benoni Hill, who had increased in rotundity since selling his grocery store and giving up an active life.The Further Adventures of Quincy Adams Sawyer and Mason's Corner Folks|Charles Felton Pidgin