‖An′chy‐lo″sis, An′ky‐lo″sis (�), n. [NL., fr. Gr. �, fr. �, fr. � to crook, stiffen, fr. � crooked: cf. F. ankylose.] 1. (Med.) Stiffness or fixation of a joint; formation of a stiff joint. Dunglison.
2. (Anat.) The union of two or more separate bones to from a single bone; the close union of bones or other structures in various animals.