Letters that make three-d
d, e, h, r, t are letters that make 'three-d'
1 possible definitions for 'three-d'
Under this definition, three-d is an adjective and has the following properties:
three-dimensional, 3-dimensional, third-dimensional have the same meaning as 'three-d'
multidimensional is similar to three-d.
"lifelike three-dimensional characters", "a three-dimensional account of conditions under the new government", "they shot the movie in three-D"