semiorbis
From LSJ
οἵ γε καὶ ἐν τῷ παρόντι ἀντιπάλως μᾶλλον ἢ ὑποδεεστέρως τῷ ναυτικῷ ἀνθώρμουν → whose navy, even as it was, faced the Athenian more as an equal than as an inferior
Latin > English (Lewis & Short)
sēmĭ-orbis: is, m.,
I a half-circle, semicircle, Sen. Q. N. 1, 8, 4; Amm. 20, 3, 10; 22, 8, 5.
Latin > French (Gaffiot 2016)
sēmĭorbis, is, m., demi-cercle : Sen. Nat. 1, 8, 4.
Latin > German (Georges)
sēmi-orbis, is, m., der Halbkreis, Sen. nat. qu. 1, 8, 4. Amm. 20, 3, 10 u. 23, 6, 75.