convexus, a, um, adj. [conveho], vaulted, arched, rounded, convex, concave.
I Prop.: convexum id est ex omni parte declinatum, qualis est natura caeli, quod ex omni parte ad terram versus declinatum est, Paul. ex Fest. p. 58, 18 Müll. (poet., and in post-Aug. prose; not in Lucr., Quint., and Hor.): caelum, Ov. M. 1, 26; cf.: nutans convexo pondere mundus, Verg. E. 4, 50; and, mundus, Plin. 2, 2, 2, § 5; Cic. Arat. ap. N. D. 2, 44, 112 Creuz. N. cr. : foramina terrae, Ov. M. 6, 697: vallis, Plin. 5, 5, 5, § 38: cornua, id. 11, 37, 45, § 125: folia in terram, id. 25, 10, 77, § 124.—Poet.: vulgus, i. e. sitting on the curved seats of the theatre , Claud. Cons. Hon. 6, 614.—
2 Subst.: convexum , i, and more freq. in plur.: convexa , ōrum, n., a vault, arch, concavity : in convexo nemorum, Verg. A. 1, 310: taedet caeli convexa tueri, the vaulted arch , id. ib. 4, 451; so, vallium, the hollows, cavities , Just. 2, 10; cf.: dum montibus umbrae lustrabunt convexa, Verg. A. 1, 608; and absol. : talis sese halitus ... supera ad convexa ferebat, id. ib. 6, 241; so of the heavens, Claud. Cons. Prob. et Olyb. 242; id. in Rufin. 1, 367; 2, 454 al.; of a theatre, id. Cons. Stil. 3, 190.—
B Trop.: Ἐνθύμημα crebrum et coruscum et convexum, Gell. 17, 20, 4 Hertz.—
II In gen., inclined, sloping downwards : vertex ad aequora, Ov. M. 13, 911; cf. Plin. 12, 22, 49, § 107: iter, Ov. M. 14, 154: vallis repente convexa, Plin. 5, 5, 5, § 38.