Abbreviation of four-dimensional.; Describes a 3D film experience that is supplemented with synchronized physical effects.

4d

adj, slang

adj, slang ·Uncommon ·College level

Definitions

Adjective

1
Abbreviation of four-dimensional.; Describes a 3D film experience that is supplemented with synchronized physical effects. not-comparable
2
Abbreviation of four-dimensional.; Denotes imaging modes with 3D capability that can also record over time. not-comparable
"4D-CT"
3
Having a quirky or oddball personality. not-comparable, slang
"Being considered 4D is usually when an idol behaves and acts differently or strangely compared to the usual Korean standards."

"Being considered 4D is usually when an idol behaves and acts differently or strangely compared to the usual Korean standards."

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.