Bot. [a. L. circināt-us, pa. pple. of circināre: see next; cf. F. circiné: see -ATE2.] lit. Rounded, made circular; spec. applied to that mode of vernation or foliation in which the leaf is rolled up on its axis from the apex to the base like a crozier, as in most ferns.
1830. Lindley, Nat. Syst. Bot., 147. Droseraceæ are known from Violaceæ by their … circinate leaves.
1870. Hooker, Stud. Flora, 457. Ferns, Leaves … circinate in vernation.
