What is "circination"

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.

n. 1 (context obsolete English) A circling motion, a rotation. 2 (context botany English) A circular growth or foliation.