Meaning & use
3D
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Meanings
adjectivebefore a noun
Having or appearing to have length, width, and depth, instead of being flat like a picture or drawing.
Grammar: Comes before a noun: a 3D model, not a model is 3D in formal style.
Patterns
- a 3D model
- 3D images
- 3D printing
- 3D graphics
- in 3D
The museum lets visitors look at a 3D model of the ancient temple.
She wore 3D glasses during the film because the screen showed depth.
The engineer checked the 3D prototype before starting production.
adjectivebefore a nouncomputing
Used in computing, design, and manufacturing for images or objects made with x-, y-, and z-axis coordinates.
Grammar: Still comes before a noun; it names the technology type rather than describing after the verb.
Patterns
- 3D design
- 3D animation
- a 3D printer
- 3D scanning
- 3D software
He studies 3D animation and hopes to work in games or film.
A 3D printer can build a small plastic part layer by layer.
The clinic uses 3D scanning to plan some operations.
Common combinations
- 3D movie
- We watched a 3D movie at the new cinema downtown.
- 3D printer
- The school bought a 3D printer for the design class.
- 3D model
- The architect emailed us a 3D model of the house.
- 3D graphics
- The laptop is powerful enough for fast 3D graphics.
- 3D glasses
- You need 3D glasses to see the effect clearly.
Synonyms and how they differ
- three-dimensional
- The full formal form; use it in careful writing, while 3D is common in everyday tech and media contexts.
- stereoscopic
- A technical word for images made to look deep, especially through special viewing; narrower than 3D.
Opposites
Word family
- three-dimensional adjective
- The full written form of 3D.
- dimension noun
- A measurable direction such as length, width, or depth.
- dimensional adjective
- Relating to measurement in one or more dimensions.
- dimensionality noun
- The number of dimensions something has.
Commonly confused: 3D or 2D? 3D or HD?
3D vs 2D
2D means flat, with only length and width; 3D adds apparent or real depth.
3D vs HD
HD concerns picture sharpness or resolution, not depth; a film can be HD and still flat 2D.
Practice
Choose the best word: “The guide showed us a ___ model so we could see the building from every side.”
Choose one answer.
3D fits because the model has depth and can be viewed from all sides. 2D and flat mean no depth, and HD only describes resolution, not shape.
Make it your own
Write a sentence using “3D”, then check it and compare it with the examples above.