rotund

Etymology

Borrowed from Latin rotundus (“round”), from Latin rota (“wheel”), from Proto-Indo-European *Hreth₂- (“to run, to roll”) . Doublet of round, which arrived through Old French/Anglo-Norman.

adj

1. Having a round, spherical or curved shape; circular; orbicular.
   He was a plump little man and we had been walking uphill at a pace—set by him—far too rapid for his short legs. He breathed stertorously, and half the drops which glimmered on his rotund face were not rain but sweat. 1956, Delano Ames, chapter 23, in Crime out of Mind
   Convex preferences may have indifference curves that exhibit “flat spots,” while strictly convex preferences have indifference curves that are strictly rotund. 1992, Hal R. Varian, Microeconomic Analysis (3rd ed.), W. W. Norton & Company, Inc., p. 96–97
2. Having a round body shape; portly or pudgy; obese.
3. (of a sound) Full and rich; orotund; sonorous; full-toned.