3-D BrE AmE ( also three-D ) /ˌθriː ˈdiː◂/ adjective
a 3-D film or picture is made so that it appears to have length, width, and depth, and therefore the people and things in it look much more real. 3D is short for 'three dimensional'
—3-D noun [uncountable] :
a film in 3-D