#1 expanse n. [sweep] a wide scope; "the sweep of the plains". wn
#2 expanse n. [area, surface area] the extent of a 2-dimensional surface enclosed within a boundary; "the area of a rectangle"; "it was about 500 square feet in area". wn
#3 expanse n. a wide and open space or area as of surface or land or sky. wn
vizzz