plural of hyperbolic plane

(mathematics) The plane containing the circle formed by the intersection of two spheres (or whose points have equal power with respect to two non-intersecting spheres)

(aviation) A winged aircraft that is propelled by a rocket engine.

(crystallography) A plane of molecular weakness that allows movement without fracture.

(anatomy) The only plane along which the human body is roughly symmetrical, running from the top to the bottom through navel, separating the left and the right hand.

(anatomy) Any imaginary plane parallel to median plane.

plural of oblique plane

A light, propeller-driven aircraft, with a high wing, designed to land on, and take off from grass airstrips or rough ground

plural of plane table

(cartography) A particular kind of instrument used by surveyors in mapmaking.