From The Collaborative International Dictionary of English v.0.48 :
Excerption \Ex*cerp"tion\, n. [L. excerptio.]
1. The act of excerpting or selecting. [R.]
[1913 Webster]
2. That which is selected or gleaned; an extract. [R.]
[1913 Webster]
His excerptions out of the Fathers. --Fuller.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
excerption
n 1: a passage selected from a larger work; "he presented
excerpts from William James' philosophical writings" [syn:
excerpt, excerption, extract, selection]