English to English

noun (n)

• the amount per unit size(noun.attribute)

  Synonym:
  denseness
  

  source: wordnet30
• the spatial property of being crowded together(noun.attribute)

  Synonym:
  compactness, concentration, denseness, tightness
  Antonym:
  dispersion, distribution
  

  source: wordnet30
• The quality of being dense, close, or thick; compactness; -- opposed to rarity.(noun)

  source: webster1913