articulation (n.)youdaoicibaDictYouDict[articulation 词源字典]
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).[articulation etymology, articulation origin, 英语词源]