Origin and Etymology of abscissa
borrowed from New Latin (short for linea abscissa, literally, “cut-off line”), going back to Latin, feminine of abscissus, past participle of abscindere “to tear off or away,” from ab- ab- + scindere “to split, separate, tear apart,” going back to Indo-European *sḱhi-n-d-, nasal present formation from the base *sḱhei̯d- “split, separate” — more at 1shed
First Known Use: 1694
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