Word Study
fragmentation
CIDE DICTIONARY
fragmentation, n.
the act or process of separating something into small pieces or fine particles. [WordNet 1.5]
OXFORD DICTIONARY
fragmentation, n. the process or an instance of breaking into fragments.
Idiom
fragmentation bomb a bomb designed to break up into small rapidly-moving fragments when exploded.
For further exploring for "fragmentation" in Webster Dictionary Online