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Related to third dimension: fourth dimension, Second dimension
1. The quality of depth or thickness in an object or a space.
2. The quality of seeming real or lifelike.
(Mathematics) the additional dimension by which a solid object may be distinguished from a two-dimensional drawing or picture of it or from any planar object
1. the additional dimension by which a solid object is distinguished from a planar object; depth.
2. an aspect that heightens the reality or vividness of something.