v.tr. 1 a remove (people) from a place of danger to stay elsewhere for the duration of the danger. b empty (a place) in this way. 2 make empty (a vessel of air etc.). 3 (of troops) withdraw from (a place). 4 a empty (the bowels or other bodily organ). b discharge (faeces etc.). evacuant n. & adj. evacuation n. evacuative adj. & n. evacuator n.
[ L evacuare (as E-, vacuus empty) ]