Abscission
[Ab*scis"sion], / n. [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.''

The above is from a site that I have lost in bouncing around tonight. If I can dig it up again, I'll put the link in.

Anyway, abscission is such a cool term! Wouldn't we call what we do here when we write and try to explain, and then get almost to the end, but end up with the word 'but'? Wouldn't that be a form of abscission? I'd go ahead and explain why I think it might be abscission and bore you all to death, but.