#1 roundness n. [rotundity] the fullness of a tone of voice; "there is a musky roundness to his wordiness". wn
#2 roundness n. the quality of being round numbers; "he gave us the results in round numbers, but their roundness didn't affect the point he was making". wn
#3 roundness n. the property possessed by a line or surface that is curved and not angular. wn
#4 roundness n. [plumpness, embonpoint] the bodily property of being well rounded. wn
vizzz