1) Dislocation 2) Dislocation of a joint 
• (n.) Articulation, usually that kind of articulation which admits of free motion in the joint; diarthrosis.
Ab`ar·tic`u·la'tion (acr/b`är*tĭk`u*lā'shŭn) noun [ Latin ab + English articulation : confer French abarticulation . See Article .] (Anat.) Articulation, usually that kind of articulation which admits of free motion in the joint; diarthrosis. 
Abarticulation is the dislocation of a joint.
[n] - dislocation of a joint
abarticulation A dislocation of a joint.
noun dislocation of a joint