three-DBrE /ˌθriː ˈdiː/ 🔊NAmE /ˌθriː ˈdiː/ 🔊 (also 3-D) noun [uncountable] the quality of having, or appearing to have, length, width and depth (= three dimensions) 三维；三度；立体◆These glasses allow you to see the film in three-D. 这副眼镜让你能看立体电影。🔊🔊◆a three-D image立体视像