# polar coordinates

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Related to polar coordinates: Spherical coordinates

## polar coordinates

*pl n*

(Mathematics) a pair of coordinates for locating a point in a plane by means of the length of a radius vector,

*r,*which pivots about the origin to establish the angle, θ, that the position of the point makes with a fixed line. Usually written (*r*, θ). See also Cartesian coordinates, spherical coordinatesCollins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

## po′lar coor′dinates

*n.pl.*

two coordinates for locating a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis.

[1810–20]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

## polar coordinates

**1.**Coordinates derived from the distance and angular measurements from a fixed point (pole).

**2.**In artillery and naval gunfire support, the direction, distance, and vertical correction from the observer/spotter position to the target.

Dictionary of Military and Associated Terms. US Department of Defense 2005.

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