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abscissa

ab·scis·sa [ ab síssə ] (plural ab·scis·sas or ab·scis·sae [ ab síssee ])


noun 
Definition:
 
x-coordinate: in mathematics, the horizontal coordinate or x-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the vertical axis or y-axis measured along a line parallel to the horizontal axis or x-axis.
See also  ordinate


[Late 17th century. < modern Latin abscissa linea "line cut off"]
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