3-D

3-D is film with a three-dimensional, stereoscopic form or appearance, giving the life-like illusion of depth. Typically achieved by viewers donning special red/blue (or red/green) polarized lens glasses. When 3-D images are interactive, users feel involved with the scene. The experience is called "virtual reality." 3-D hit peak popularity in the early 1950s. Also referred to as "3D," "three-D," "Stereoscopic 3D," "Natural Vision 3D," or "three-dimensional."