4D (disambiguation)
4D
4D or
4-D may refer to:
- four-dimensional space
- The SGI IRIS 4D line of workstations from Silicon Graphics
- Class 4-D, a classification of the Selective Service System
- 4-D (psychedelic), a psychedelic drug
- 4D BIM, a term used in computer aided design
- Cinema 4D, a commercial cross platform 3D graphics application
- 4D (train) in Melbourne, Australia
- 4-Digits, a lottery in Malaysia and Singapore
- Air Sinai, whose IATA code is "4D"
- 4th Dimension (software), a database program
- 4D SAS, developers of 4th Dimension and Wakanda
- 4D, a photo print size for digital cameras
- 4D ontology, a type of formal ontology
- Ring finger, the fourth digit (abbreviated 4D) of the hand
- 4D Audio Recording system, an audio recording system developed by Deutsche Grammophon
- Potez 4D, a four-cylinder aircraft engine
- Augmented reality, a technology which supplements one's experience of reality with computer-generated effects