// Workers AI · dad joke modeWhat did 4D say to 3D? You're one dimension behind.

4D or 4-D primarily refers to:

• Four-dimensional space
• 4-dimensional spacetime: three-dimensional space of length, width, and height, plus time

It may also refer to:

Computers and photography

• 4D (software), a complete programming environment including database and web server
  • 4D SAS, developers of 4D and Wakanda
  • 4D Inc, a US-based subsidiary of 4D SAS
• 4D BIM, a term used in computer aided design
• 4D printing
• Cinema 4D, a commercial cross platform 3D graphics application
• SGI IRIS 4D, a line of workstations from Silicon Graphics
• 4D, a photo print size for digital cameras

Arts and entertainment

• 4D (album), a 2010 album by Matthew Shipp
• "4-D" (The X-Files), an episode of The X-Files
• 4D Audio Recording system, an audio recording system developed by Deutsche Grammophon
• 4D film, a high technology film experience augmented with physical or environmental effects
• 4DTV, a satellite TV broadcasting technology from Motorola
• 4DX, a 4D film format
• "4D", a song by Grand Mixer DXT and Bill Laswell from Aftermathematics (2003)
• "4D", a song by Northlane from Alien (2019)
• 4D, the production code for the 1975 Doctor Who serial Revenge of the Cybermen

Other

• Class 4-D, a classification of the Selective Service System
• 4-D (psychedelic), a psychedelic drug
• 4D (train) in Melbourne, Australia
• 4-Digits, a lottery in Malaysia and Singapore
• Air Sinai (IATA: 4D)
• Ring finger, the fourth digit (abbreviated 4D) of the hand
• Potez 4D, a four-cylinder aircraft engine

See also

• D4 (disambiguation)
• DDDD (disambiguation)
• Fourth dimension (disambiguation)
• Four Dimensions (disambiguation)