abscissa (n.)

1798 in Latin form, earlier Englished as abscisse (1690s), from Latin abscissa, short for abscissa (linea) "(a line) cut off," or (recta ex diametro) abscissa "(a line) cut off (from the diameter)," fem. of abscissus "cut off," past participle of abscindere "to cut off, divide, part, separate," from ab "off, away from" (see ab-) + scindere "to cut, rend, tear asunder, split; split up, part, divide, separate," from PIE *skind-, from root *skei- "to cut, split." The Latin word translates Greek apolambanomene.