English

Etymology
L. dualis, two (adjective), from duo#Latin|duo, two, + adjective suffix -alis

Pronunciation
(RP): dyo�o�l, IPAchar|/dj��l/, /<tt>djU@l</tt>/
(US): do�o'�l, IPAchar|/�du�l/, /<tt>"du@l</tt>/
:Rhymes: Rhymes:English:-��l|-��l

Homophones
duel

Adjective
dual (no compar or superl)

1. Characterized by having two (usually equivalent) components.
2. Double.

#:dual-headed computer

1. grammar Pertaining to grammatical number (as in singular and plural), referring to two of something, such as a pair of shoes, in the context of the singular, plural and in some languages, trial number|trial grammatical number. Modern Arabic displays a dual number, as did Homeric Greek.

Translations
trans-top|having two components
Dutch: tweeledig
Esperanto: duparta, duala, duobla, binara
Finnish: kaksikko- (in compounds), kaksois- (in compounds)
trans-mid
Russian: двойной (dvojnój), двой��венн�й (dvójstvennyj)
Spanish: doble
trans-bottom

trans-top|double
Dutch: dubbel-
Esperanto: duobla
Finnish: kaksikko- (in compounds), kaksinkertainen
trans-mid
Russian: двойной (dvojnój), дво�кий (dvojákij), �двоенн�й (sdvójennyj)
Spanish: doble
trans-bottom

trans-top|in grammar
Finnish: kaksikko- (in compounds), duaalinen, duaali- (in compounds)
trans-mid
Russian: двой��венн�й (dvójstvennyj)
Spanish: dual
trans-bottom

Translations to be checked
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ttbc|Indonesian: ganda, dwi, dual
ttbc|Interlingua: dual
ttbc|Latin: dualis
ttbc|Romanian: dual

Noun
dual (plural: duals)

1. Of an item that is one of a pair, the other item in the pair.
2. geometry Of a regular polyhedron with V vertices and F faces, the regular polyhedron having F vertices and V faces.

#:The tetrahedron is the dual of the cube.

1. grammar dual number The grammatical number of a noun marking two of something (as in singular, dual, plural), sometimes referring to two of anything (a couple of, exactly two of), or a chirality-marked pair (as in left and right, as with gloves or shoes) or in some languages as a discourse marker, "between you and me". A few languages display trial number.
2. mathematics Of a vector in an inner product space, the linear functional corresponding to taking the inner product with that vector. The set of all duals is a vector space called the dual space.

Related terms
duality
dualism

See also
paucal
plural
quadral
singular
singulative
trial
unal

Irish

Noun
dual m

1. tuft

Declension
ga noun m1|d|ual|uail

Category:Irish nouns

ar:dual
de:dual
es:dual
fr:dual
io:dual
hu:dual
pl:dual
ru:dual
te:dual
vi:dual
tr:dual
zh:dual

• 2007-11-22 13:58 - Interwicket - iwiki +es

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