I.the circumference of a circle, a circle (a word of Vitr.): “linea circinationis,” Vitr. 1, 6, 6: “circuli,” id. 9, 7, 2; 3, 3; 10, 10 al.—Of the circular path of the planets, Vitr. 9, 4, pp. 264, 266 Bip.
circĭnātĭo , ōnis, f. circino (lit. the describing of a circle; hence, concrete),