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abscissa

[ab-sis-uh] /æbˈsɪs ə/
noun, plural abscissas, abscissae
[ab-sis-ee] /æbˈsɪs i/ (Show IPA).
Mathematics
1.
(in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis.
Compare ordinate.
Origin
1690-1700
1690-1700; feminine of Latin abscissus (past participle of abscindere to abscind)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for abscissae

abscissa

/æbˈsɪsə/
noun (pl) -scissas, -scissae (-ˈsɪsiː)
1.
the horizontal or x-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the y-axis measured parallel to the x-axis Compare ordinate
Word Origin
C17: New Latin, originally linea abscissa a cut-off line
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for abscissae
abscissa
1690s, from L. abscissa (linea) "(a line) cut off," from fem. pp. of abscindere "to cut off," from ab- "off, away" + scindere "to cut" (see shed (v.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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abscissae in Science
abscissa
  (āb-sĭs'ə)   

Plural abscissas or abscissae (āb-sĭs'ē)
The distance of a point from the y-axis on a graph in the Cartesian coordinate system. It is measured parallel to the x-axis. For example, a point having coordinates (2,3) has 2 as its abscissa. Compare ordinate.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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