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3D

or 3-D

[three-dee]
adjective
  1. of, relating to, or representing something in three dimensions; three-dimensional: 3D movies.
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noun
  1. a three-dimensional form or appearance: My dreams are always in 3D.
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Origin of 3D

An Americanism dating back to 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018