rotunditas, ātis,f. rotundus, a round shape, roundness, rotundity (post-Aug.). Lit.: gemma rotunditatis absolutae, Plin. 37, 11, 73, § 190; so id. 18, 13, 34, § 130; 16, 23, 35, § 86; 19, 5, 25, § 76 al.

— Trop.: verborum, a roundness, smoothness, Macr. S. 7, 5: Symmachi, Sid. Ep. 1, 1.

—Concr., a circular space: rotunditas dimidii cubiti, Vulg. 3 Reg. 7, 35.