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# abscissa

[ab-sis-uh]
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noun, plural ab·scis·sas, ab·scis·sae [ab-sis-ee] /æbˈsɪs i/. 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 of .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}abscissa

1690–1700; feminine of Latin abscissus (past participle of abscindere to abscind)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for abscissae

# abscissa

noun plural -scissas or -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 -axisCompare 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

# abscissa

### n.

1690s, from Latin abscissa (linea) "(a line) cut off," from fem. past participle of abscindere "to cut off," from ab- "off, away" (see ab-) + scindere "to cut" (see shed (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper

abscissae in Science

# abscissa

[ăb-sĭsə]
Plural abscissas abscissae (ăb-sĭsē)
1. 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.