a. rare. [ad. L. anfractuōs-us winding, roundabout, f. anfract-us: see prec. and -OSE.] Winding, sinuous.

1

1691.  Ray, Creation, II. (1701), 272. Behind this drum are several vaults and anfractuose [ed. 1704 anfractuous] cavities in the ear bone.

2

1830.  Lindley, Nat. Syst. Bot., 35. Bombaceæ … Anthers 1-celled, linear, reniform or anfractuose.

3