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1. An increase in the density of something
   - compaction, concretion, densification
    
2. The process or result of becoming smaller or pressed together
   "the compression of a gas on cooling";
   - condensation, contraction
    
3. Encoding information while reducing the bandwidth or bits required
    
4. Applying pressure
   - compressing

Derived forms: compressions

Type of: concentration, encoding, encryption, press, pressing, pressure, shrinkage, shrinking

Antonym: decompression, rarefaction

Encyclopedia: Compression