(ăb-sĭs′ă)
[Pronunciation]
[L. abscindere, to cut off]
The horizontal line, or x-axis, in a graph of a two-dimensional coordinate system wherein perpendicular horizontal and vertical lines are used in order to provide a frame of reference.
The ordinate is the vertical line, or y-axis.
abscissa is a sample definition found in
Taber's Medical Dictionary, 21st Edition.
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