3D

• 3-D, 3 D, three-D
• (science fiction) three-dee, threedee

3D (not comparable)

1. Abbreviation of three-dimensional.

3D (plural 3Ds)

1. (science fiction) A system capable of recording or displaying three-dimensional video.

   Synonym: tri-V

   • 1969, Dave Van Arnam, Starmind, New York, N.Y.: Ballantine Books, page 14:

     No, the slightest imbalance there would have alarms flashing all over the room. Probably it was the fact that he knew the threedee was a little out of whack.

2. (science fiction) A three-dimensional video.

   Synonyms: trideo, tridim

   • 1955 January, Martin Lesser, “The Dictator”, in Imagination, volume 6, number 1, page 85:

     A man Ellaby's own size was sitting there, viewing a 3D. When he heard Ellaby at the door he got up.

• “3D”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “3D”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “three-D, adj.” under “three, adj. and n.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, launched 2000.
• “D., adj.” under “D, n.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, launched 2000.
• Jesse Sheidlower, editor (2001–2024), “three-D, n.”, in Historical Dictionary of Science Fiction.

Partial calque of English 3D. From 三 (sān, “three”) + English 3D.

3D

1. 3D; three-dimensional

3D

1. Abbreviation of tredimensjonal.

3D ?

1. Abbreviation of tre dimensjonar (“three dimensions”).

• “3D” in The Nynorsk Dictionary.