uniplanar
/ˌjunɪˈpleɪnər/
adjective
- Lying or occurring in a single plane; flat and not curved or angled.
- The engineer designed a uniplanar bracket to keep the shelf perfectly level.
- In the drawing, all the lines are uniplanar, so the shape looks two-dimensional.
- The crystal's cleavage is uniplanar, meaning it splits along one flat surface.