{{wiktionary}} '''Dual''' or '''Duals''' may refer to: {{TOCright}} ==Paired/two things== * 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 (mathematics) * Dual number, a number system used in automatic differentiation * Dual (grammatical number), a grammatical category used in some languages * Dual county, a Gaelic games county which competes in both Gaelic football and hurling * 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 impedance, electrical circuits that are the dual of each other * Dual SIM cellphone supporting use of two SIMs * Aerochute International Dual a two-seat Australian powered parachute design

==Acronyms and other uses== * Dual (brand), a manufacturer of Hifi equipment * DUAL (cognitive architecture), an artificial intelligence design model * DUAL algorithm, or diffusing update algorithm, used to update Internet protocol routing tables * Dual language, alternative spelling of the Australian Aboriginal Dhuwal language * DUAL table, a special one-row and one-column database table * Dual-Ghia, US-brand of luxury-car of the late 1950s

== Media == * ''Dual'' (2008 film), a 2008 western drama film * ''Dual'' (2022 film), a 2022 science fiction thriller film * "Dual" (''Heroes''), an episode of ''Heroes'' * Dual! Parallel Trouble Adventure, an anime series * ''Dual'' (album), an album of traditional Scottish and Irish music recorded by Éamonn Doorley, Muireann Nic Amhlaoibh, Julie Fowlis and Ross Martin, released 2008 * ''Dual'' (EP), a 2013 EP by Sampha * ''Duals'', an album by U2 * The Duals, American duo * Dual (brand), brand name of audio and video electronics.

== People == * Duall (c.1795 – c.1840), an Indigenous Australian outlaw and explorer

==See also== {{canned search|dual}} *Duality (disambiguation) *Duel (disambiguation), a homonym *{{intitle|plural=yes}} *{{lookfrom}} *Double (disambiguation) *Duo (disambiguation) *Pair (disambiguation) *Twin (disambiguation)

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