rotunditas
From LSJ
μέτρον γὰρ τοῦ βίου τὸ καλόν, οὐ τὸ τοῦ χρόνου μῆκος → for life's measure is its beauty not its length (Plutarch, Consolatio ad Apollonium 111.D.4)
Latin > English (Lewis & Short)
rŏtundĭtas: ātis,f. rotundus,
I a round shape, roundness, rotundity (post-Aug.).
I Lit.: gemma rotunditatis absolutae, Plin. 37, 11, 73, § 190; so id. 18, 13, 34, § 130; 16, 23, 35, § 86; 19, 5, 25, § 76 al.—
II 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.
Latin > French (Gaffiot 2016)
rŏtundĭtās, ātis, f. (rotundus), rondeur : Plin. 37, 190 || [fig.] construction périodique des phrases [style arrondi] : Macr. Sat. 7, 5, 1.