motion (n.)youdaoicibaDictYouDict[motion 词源字典]
late 14c., "suggestion; process of moving," from Old French mocion "movement, motion; change, alteration" (13c.), from Latin motionem (nominative motio) "a moving, a motion; an emotion," from past participle stem of movere "to move" (see move (v.)). Motion picture attested from 1896.[motion etymology, motion origin, 英语词源]
motion (v.)youdaoicibaDictYouDict
late 15c., "to request, petition" (obsolete), from motion (n.). The sense in parliamentary procedure first recorded 1747; with meaning "to guide or direct by a sign, gesture, movement" it is attested from 1787. Related: Motioned; motioning.