Dictionary.com
Thesaurus.com

concyclic

American  
[kuhn-sahy-klik, -sik-lik] / kənˈsaɪ klɪk, -ˈsɪk lɪk /

adjective

Geometry.
  1. (of a system of points) lying on the circumference of a circle.


Etymology

Origin of concyclic

First recorded in 1870–75; con- + cyclic