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Definitions for "Level surface"
Keywords:  geopotential, perpendicular, gravity, liftoff, plumbline
Related Terms: Surface roughness, Ruled surface, Surface, Hyperboloid, Geoid, Level, Developable surface, Plane, Paraboloid, Envelope, Kinetic friction, Sphere, Epicentre, Isopycnic, Radius of curvature, Curvature, Epicenter, Normal force, Parabola , Coefficient of friction, Tangent plane, Divergence, Conic section, Ellipsoid, Spiral, Ellipsoid, Arc, Hyperbola, Centripetal force, Directrix, Normal, Tangent, Ellipse, Spherical triangle, Geodesic, Oblate spheroid, Friction, Centripetal acceleration, Quadric, Shear force, Curve, Wavefront, Lagrange points, Projection, Inclined plane, Free surface, Conic projection, Convex, Superelevation
See geopotential surface as preferred term.
baysail.com
a continuous surface that is at all points perpendicular to the direction of gravity
biosystems.okstate.edu
Surface which at every point is perpendicular to the plumbline or the direction in which gravity acts.
aca-net.com
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