[1] : The Collaborative International Dictionary of English v.0.48

compaction \compac"tion\, n. l. compactio.
   the act of making compact, or the state of being compact.
   obs. --bacon.
   1913 webster

[2] : WordNet (r) 2.0

compaction
     n 1: an increase in the density of something syn: compression,
           concretion, densification
     2: the act of crushing syn: crush, crunch
see also:
compression concretion densification crush crunch 

[3] : The Free On-line Dictionary of Computing (27 SEP 03)

compaction
     
        compression
     
     
see also:
compression 

Compaction >> C Words
Compaction, definition of term: Compaction
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