abscissa /abˈsɪsə/

a

I. noun


[Mathematics] (in a system of coordinates) the distance from a point to the vertical or y -axis, measured parallel to the horizontal or x -axis; the x -coordinate.

Compare with ordinate.
– origin early 17th cent. (denoting the part of a line between a point on it and the point of intersection with an ordinate): from modern Latin abscissa (linea) ‘cut-off (line)’, feminine past participle of abscindere (see abscission).

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