C / circĭnātĭo
noun

circĭnātĭo

gen. circĭnātōnis · gender feminine · decl. 3rd
circino (lit. the describing of a circle; hence, concrete)
the circumference of a circle; a circle; the circular path of the planets
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.