\Ab`ar*tic`u*la"tion\ (acr/b`[aum]r*t[i^]k`[-u]*l[=a]"sh[u^]n), n. [L. ab + E. articulation : cf. F. abarticulation. See {Article}.] (Anat.) Articulation, usually that kind of articulation which admits of free motion in the joint; diarthrosis. --Coxe.