circumference Copy link Outline I. In strict geom. senseII. In looser sense1. ambĭtus, ūs2. circuĭtio • circumference: I. In strict geom. sense: pĕrĭphĕrīa (Gr. περιφέρεια): Capell. (In purer Latin extrema circinatio; extrema circinationis linea: cf. Vitr. 9, 8: linea circumcurrens quae orbem efficit, Quint.) II. In looser sense: the outline of a rounded figure: 1. ambĭtus, ūs: the c. of a shield, am. parmae, Plin.: the c. of a lake, am. lacus, Suet. 2. circuĭtio: a c. of three cubits each, c. ternorum cubitorum, Vitr.