1[with object]To cut off; to separate, detach. Now rare and literary.
2[with object]To cause to undergo abscission; = abscise. Only in pass.
3[no object]To undergo abscission; = abscise.
Origin
Early 17th century; earliest use found in William Folkingham (fl. 1610–1620). From classical Latin abscindere to tear or cut off, to separate from ab- + scindere to cut, rend.