rotundi-, rotundo-, rotund-

(Latin: rotondo, rotundus; round, rounded; from Latin, rota, "wheel")

rotundity
rotundly
rotundness
rotundo
A round building; any building that is round both on the outside and inside.

The most celebrated edifice of this kind is the Pantheon in Rome.

rotundo-ovate
rotundo-tetragonal
subrotund (noun), more subrotund, most subrotund
Somewhat or a little rounded or heavy: "Mark had a subrotund physic in that he may be overweight but he is not considered to be very fat."
subrotundate
subrotundous
tondo (s), tondi (pl) (and sometimes), tondos
1. A circular painting or relief carving.
2. A round painting, relief, or similar work of art.
3. Etymology: Italian, short for rotondo, "round", from Latin rotundus.