4D

alternative 4-D

1. Abbreviation of four-dimensional.
   1. not comparableDescribes a 3D film experience that is supplemented with synchronized physical effects.
   2. not comparableDenotes imaging modes with 3D capability that can also record over time.

      4D-CT

2. not comparableslanglifestyleHaving a quirky or oddball personality.

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

   2018, Hayley Marland, K-Pop Survival Guide, page 99

   1 more example

   If every K-pop group has a “4D” member, V was probably BTS's. He's grown up significantly since then, emanating maturity and wisdom […]

   2021, Entertainment Weekly The Ultimate Guide to BTS