Dual may refer to:

  • Dual (mathematics), a notion of paired concepts that mirror one another
    • Dual (category theory), a formalization of mathematical duality
    • . . . see more cases in Category:Duality theories
  • Dual (grammatical number), a grammatical category used in some languages
  • Duality (electrical circuits)
  • 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 (cognitive architecture), an artificial intelligence design model
  • DUAL algorithm, or Diffusing update algorithm, used to update Internet protocol routing tables
  • DUAL table, a special one-row and one-column database table
  • Dual SIM cellphone
  • Dual (brand), a manufacturer of Hifi equipment
  • Dual county, referring to a Gaelic Athletic Association county which traditionally competes at a similar level in both Gaelic football and hurling

Read more about Dual:  Media

Famous quotes containing the word dual:

    Thee for my recitative,
    Thee in the driving storm even as now, the snow, the winter-day
    Thee in thy panoply, thy measur’d dual throbbing and thy beat
    Thy black cylindric body, golden brass and silvery steel,
    Walt Whitman (1819–1892)