parabolic point
Geometry
noun
(Originally) a point on a surface at which the indicatrix is a parabola, i.e. where a plane parallel to, and an infinitesimal distance from, the tangent plane at that point intersects the surface in a parabola; (now) a point on a surface at which the Gaussian curvature is zero.
Origin
Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist.
- electrostatically
- electrostatic generator
- electrostatic lens
- electrostatic precipitator
- electrostatics
- electrostatic units
- electrostimulation
- electrostriction
- electrostrictive
- electrosurgery
- electrosurgical
- electrosurgically
- electrosynthesis
- electrosynthetic
- electrosynthetically
- electrotactic
- electrotaxis
- electrotechnic
- electrotechnical
- electrotechnician
- electrotechnics
- electrotechnology
- electrotelegraphic
- electrotelegraphy
- electrotherapeutic