a. Geom. [f. TRI- 1, 2 + CIRCULAR] a. Referred to three fixed circles: said of a system of co-ordinates. b. Passing three times through each of the circular points at infinity: said of curve.
1876. Cayley, Math. Papers, IX. 562. The sextic is a tricircular sextic having the three points A, B, C for foci.
