| three-d | (n) a movie with images having three dimensional form or appearance, Syn. 3-D, 3D |
| three-d | (n) having a three-dimensional form or appearance, Syn. 3-D, 3D, Example: aren't dreams always in 3-D? |
| three-day event | (n) an equestrian competition; the first day is dressage; the second is cross-country jumping; the third is stadium jumping |
| three-decker | (n) any ship having three decks |
| three-decker | (n) a warship carrying guns on three decks |
| three-dimensional | (adj) involving or relating to three dimensions or aspects; giving the illusion of depth, Syn. three-d, third-dimensional, 3-dimensional, Example: lifelike three-dimensional characters; a three-dimensional account of conditions under the new government; they shot the movie in three-D |
| three-dimensionality | (n) the property of having three dimensions, Syn. third-dimensionality |
| three-dimensional radar | (n) radar that will report altitude as well as azimuth and distance of a target, Syn. 3d radar |