Online Encyclopedia
ORDINATE
Online EncyclopediaOriginally appearing in Volume
V20,
Page 189
of the 1911 Encyclopedia Britannica.
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ORDINATE , in the Cartesian See also: system of co-ordinates, the distance of a point from the See also: horizontal See also: axis (axis of x) measured parallel to the axis of y
.
Thus PR is the ordinate of P
.
The word appears to have been first used by Rene See also: Descartes, and to be derived from lineae ordinatae, a See also: term used by
See also: Roman surveyors for parallel lines
.
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