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WORDNET DICTIONARY

Noun compaction has 2 senses

• compaction(n = noun.event) compression, concretion, densification - an increase in the density of something; Array
is a kind of concentration
Derived form verb compact₁

• compaction(n = noun.act) crunch, crush - the act of crushing; Array
is a kind of compressing, compression
has particulars: grind, mill, pulverisation, pulverization
Derived forms verb compact₃, verb compact₂

CIDE DICTIONARY

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compaction

Contraction

N contraction, reduction, diminution, decrease of size, defalcation, decrement, lessening, shrinking, compaction, tabes, collapse, emaciation, attenuation, tabefaction, consumption, marasmus, atrophy, systole, neck, hourglass, condensation, compression, compactness, compendium, squeezing, strangulation, corrugation, astringency, astringents, sclerotics, contractility, compressibility, coarctation, inferiority in size, contracting, astringent, shrunk, contracted, strangulated, tabid, wizened, stunted, waning, neap, compact, unexpanded &c (expand), contractile, compressible, smaller &c (small).

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