rotundatio
From LSJ
τῶν δ᾽ ὀρθουμένων σῴζει τὰ πολλὰ σώμαθ᾽ ἡ πειθαρχία → But of those who make it through, following orders is what saves most of their lives (Sophocles, Antigone 675f.)
Latin > English (Lewis & Short)
rŏtundātĭo: ōnis, f. rotundo,
I a making round, a rounding: linea rotundationis, i. e. the circumference, Vitr. 1, 6 fin.; 3, 1; 10, 11.
