the officer in charge of a particular military group or institution 司令；指挥官 the commandant of a prisoner of war camp 战俘营的指挥官 Commandant Macdonald 麦克唐纳指挥官
Word Originlate 17th cent.: from French commandant, or Italian or Spanish commandante, all from late Latin commandare ‘to command’, from com- (expressing intensive force) + mandare ‘commit, command’.