axis of abscissas
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Related to axis of abscissas: Coordinate axes
axis of abscissas[′ak·səs əv ab′sis·əz]
The horizontal or x axis of a two-dimensional cartesian coordinate system, parallel to which abscissas are measured.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.