noun.
The inclusion of hyphens; especially, the correct locations of hyphens.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
division of a word especially at the end of a line on a page
noun.
connecting syllables and words by hyphens
Word Usage
"As far as TeX or any typesetting is concerned, one of the most noticeable language-specific problems is incorrect hyphenation, that is, breaking words at sensible places."