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abscissa
(redirected from abscissae)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
abscissa /ab·scis·sa/ (ab-sis´ah) the horizontal line in a graph along which are plotted the units of one of the factors considered in the study. Symbol .
abscissa
[absis′ə]
Etymology: L, ab, away; scindere, to cut
a point on a horizontal Cartesian coordinate plane measured from the y-axis (or vertical axis) running perpendicular to the plane, or the x-axis.

abscissa
the horizontal line in a graph along which are plotted the units of one of the factors considered in the study, as time in a time-temperature study. The other line is called the ordinate.


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The abscissae show time which progresses from right to left (1 cm = 30 secs), while the ordinates indicate both temperature (1 cm = 25 [degrees] C) and power (1 cm = 200 kW).
 
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