also: さんディーえいぞう
3D image; three-dimensional video
Refers to images or video with depth perception, often used in contexts like 3D movies, VR, or computer graphics.
This movie is much more impressive when watched in 3D.
The latest TVs support 3D images.
Standard kanji/kana mixed spelling; the reading スリーディーえいぞう is the most common.
Alternate reading using さん for ３; less common but recognized.
Combination of ３Ｄ (from English '3D') and 映像 (image/video). The reading スリーディー is a direct borrowing from English 'three-D', while さんディー uses the Sino-Japanese reading of ３.