polar cataract n.
A capsular cataract limited to the anterior or posterior polar region of the lens.
noun 1. either the Arctic or the Antarctic Circle. noun 1. a term for either the Arctic Circle, Antarctic Circle polar circle The Arctic Circle or the Antarctic Circle.
- Polar coordinate system
polar coordinate system A system of coordinates in which the location of a point is determined by its distance from a fixed point at the center of the coordinate space (called the pole) and by the measurement of the angle formed by a fixed line (the polar axis, corresponding to the x-axis in Cartesian coordinates) […]
noun, Astronomy. 1. . noun 1. the angular distance of a star, planet, etc, from the celestial pole; the complement of the declination Also called codeclination
noun, Mathematics. 1. an equation in which the variables are polar coordinates. noun 1. an equation in polar coordinates