Arthrodia \Ar*thro"di*a\, n. [NL., fr. Gr. ?, fr. ? well
articulated; 'a`rqron a joint + ? shape.] (Anat.)
A form of diarthrodial articulation in which the articular
surfaces are nearly flat, so that they form only an imperfect
ball and socket.
[1913 Webster] Arthrodial