LATIN DICTIONARYLexicon Latīnum
noun

circĭnātĭo

Meaning

  1. the circumference of a circle

circĭnātĭo, ōnis, f. circino (lit. the describing of a circle; hence, concrete),
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.

Quick answers

What does circĭnātĭo mean in Latin?
circĭnātĭo, a noun, means “the circumference of a circle”.