What does abscission mean?
The definition of abscission
Ab*scis”sion, n.
Etym: [L. abscissio. See Abscind.]

1 The act or process of cutting off. “Not to be cured without the abscission of a member.” Jer. Taylor.
2 The state of being cut off. Sir T. Browne.
3 (Rhet.)
A figure of speech employed when a speaker having begun to say a thing stops abruptly: thus, “He is a man of so much honor and candor, and of such generosity — but I need say no more.”