English to English

noun (n)

• (mathematics) a lack of symmetry(noun.attribute)

  Synonym:
  dissymmetry, imbalance
  Antonym:
  balance, correspondence, symmetricalness, symmetry
  

  source: wordnet30
• Want of symmetry, or proportion between the parts of a thing, esp. want of bilateral symmetry.(noun)

  source: webster1913