Cĭr′ci-nal or Cĭr′ci-nate, a.

a. [Fr. circinal, from Lat. circinus, Gr. κίρκινος, circle; Lat. circinatus, p. p. of circinare. See infra.] (Bot.) Rolled together downward, the tip occupying the center;—a term used in reference to foliation or leafing, as in ferns. Gray.