abridgment

n. act of making shorter, summarizing; shortened form of something; reduction

Abridgement or abridgment is a term defined as "shortening" or "condensing" and is most commonly used in reference to the act of reducing a written work, typically a book, into a shorter form.A written work is mostly abridged for adaptation into an audio book, to make a more convenient companion to an already established work, or as part of censorship of the work.
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Noun
1. a shortened version of a written work
(synonym) condensation, abridgement, capsule
(hypernym) summary

(n.)
The act of abridging, or the state of being abridged; diminution; lessening; reduction or deprivation; as, an abridgment of pleasures or of expenses.
  

(n.)
That which abridges or cuts short; hence, an entertainment that makes the time pass quickly.
  

(n.)
An epitome or compend, as of a book; a shortened or abridged form; an abbreviation.
  

A concise description of the invention, usually written by a patent examiner, and is still published in a few countries. An abridgment is a more detailed and explicit version of an abstract.