di·ar·thro·sis (dī'är-thrō'sĭs) n.
pl.di·ar·thro·ses (-sēz) Any of several types of bone articulation permitting free motion in a joint, as that of the shoulder or hip.
[Greek diarthrōsis, from diarthroun, to articulate : dia-, between; see dia- + arthroun, to fasten by a joint (from arthron, joint; see ar- in Indo-European roots).] di'ar·thro'di·al (-dē-əl) adj.
Main Entry: di·ar·thro·di·al Pronunciation: "dI-"är-'thrOd-E-&l Function: adjective : of, relating to, or exhibitingdiarthrosis
Main Entry: di·ar·thro·sis Pronunciation: "dI-är-'thrO-s&s Function: noun Inflected Form: pluraldi·ar·thro·ses/-"sEz/ 1: articulation that permits free movement 2: a freely movable joint called also synovialjoint