ab·scis·sa
(ab-sisə)
(ab-sisə)n.pl. ab·scis·sas or ab·scis·sae(-sise)
Symbol xThe coordinate representing the position of a point along a line perpendicular to the y-axis in a plane Cartesian coordinate system.
[New Latin(linea) abscissa, (line) cut off, fromLatinabscissa, feminine past participle ofabscindere, to abscise; see ABSCISSION.]
abscissaThe coordinates for A are (4,3); the abscissa is 4 and the ordinate is 3.