3-D Meaning of 3-D in English I. ˈthrē|dē adjectiveEtymology: D abbreviation of dimensional : three-dimensional II. ˈ ̷ ̷ˈ ̷ ̷ noun : the three-dimensional form or a picture produced in it Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012