Source : Webster's Revised Unabridged Dictionary (1913)

Circination \Cir`ci*na"tion\, n. [L. circinatio circle.]
   1. An orbicular motion. [Obs.] --bailey.

   2. A circle; a concentric layer. [Obs.] ``The circinations
      and spherical rounds of onions.'' --Sir T. Browne.