Look up dual in Wiktionary, the free dictionary.

Dual may refer to:

• a pair or a grouping of two:
  • dual basis, in mathematics, a basis that uniquely has a zero or unity inner product with a given basis
  • dual diagnosis, a psychiatric diagnosis of co-occurrence of substance abuse and a mental problem
  • dual fertilization, simultaneous application of a P-type and N-type fertilizer
  • dual number, a grammatical construct in some languages
  • DUAL table, a special kind of one-row and one-column database table
  • dual (grammatical number)

• duality, a property of something with two states:
  • in electronics, see dual (electronics)
  • in mathematics, see duality (mathematics)
  • in logic and philosophy, see duality

• an acronym (DUAL):
  • Diffusing update algorithm, used to update Internet protocol routing tables
• a proper name:
  • Dual, a manufacturer of Hifi equipment
  • Dual!, an anime series

• Dual is also:
  • DUAL (cognitive architecture), an artificial intelligence design model
  • a homonym of 'duel', with various meanings
  • "Dual" (Heroes), an episode of Heroes
  • Dual (film)
  • Dual (album), an album of traditional Scottish and Irish music recorded by Éamonn Doorley, Muireann Nic Amhlaoibh, Julie Fowlis & Ross Martin, released October 2008.

[ See also

• Duel
  • Duel (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to thee intended article.