noun
hyperbolic paraboloid
A saddle-shaped quadric surface used in geometry and structural engineering.
双曲放物面は、鞍のような形をした曲面です。
A hyperbolic paraboloid is a curved surface shaped like a saddle.
Compound of 双曲 (hyperbolic) + 放物面 (paraboloid), a calque from English 'hyperbolic paraboloid'.