articulation (n.)

early 15c., "a joint or joining; setting of bones," from Old French articulation, from Medieval Latin articulationem (nominative articulatio) "separation into joints," noun of action from past-participle stem of articulare "to separate (meat) into joints," also "to utter distinctly," from articulus, diminutive of artus "joint" (see article). Meaning "the uttering of articulate sounds" is from 1610s.