abscissa (n.) Look up abscissa at Dictionary.com
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" (see ab-) + scindere "to cut, tear, rend" (see shed (v.)). The Latin word translates Greek apolambanomene.