dual
Language: English
Part of speech: adj
Pronunciation: enpr: dyo͞oʹəl
enpr: jo͞oʹəl
note: yod-coalescence
ipa: /ˈdʒuː.əl/
note: without the yod-coalescence
ipa: /ˈdjuː.əl/
enpr: d(y)o͞o'əl
ipa: /ˈdu.əl/
ipa: /ˈdju.əl/
rhymes: -uːəl
homophone: duel
homophone: jewel (yod-coalescence)
Forms: form: du.
Etymology: PIE word
 *dwóh₁
Borrowed from Latin dualis (“two”), from duo (“two”) + adjective suffix -alis.
Senses: examples: text: a dual-motor vehicle
synonyms: double
twin
glosses: Characterized by having two (usually equivalent) components.
examples: text: dual engine failure
text: dual citizenship
text: Both Deborah and Samuel held dual roles as judges and prophets.
ref: 2020, Grace Ying May, “Women Disciplining Men: A Biblical Pattern of Leadership”, in Aída Besançon Spencer, William David Spencer, editors, Christian Egalitarian Leadership: Empowering the Whole Church According to the Scriptures, page 48:
text: And some Asian countries are tightening their immigration laws. Japan reinforced its strict stance in January when a court upheld the country’s ban against dual citizenship, rejecting a lawsuit filed by Japanese citizens living in Europe.
ref: 2021 March 15, Jessie Yeung, “These Asian countries are giving dual citizens an ultimatum on nationality – and loyalty”, in CNN:
synonyms: word: double
word: duplicate
word: dual
word: double
word: duple
word: duplicate
word: twissel
word: twofold
word: twosome
glosses: Pertaining to two, pertaining to a pair of.
examples: text: Modern Arabic displays a dual number, as did Homeric Greek.
topics: grammar
human-sciences
linguistics
sciences
coordinate_terms: singular
trial
plural
glosses: Pertaining to a grammatical number in certain languages that refers to two of something, such as a pair of shoes.
topics: mathematics
natural-sciences
physical-sciences
physics
sciences
glosses: Exhibiting duality.
examples: text: Accordingly, a hyperplane in the sample space is dual to a subspace in the variable space.
ref: 2012, Doug Fisher, Hans-J. Lenz, Learning from Data: Artificial Intelligence and Statistics V, Springer Science & Business Media, →ISBN, page 81:
topics: linear-algebra
mathematics
sciences
glosses: Being the space of all linear functionals of (some other space).
examples: text: Every category is dual to its own dual, so if a statement holds in all categories so does its dual.
ref: 1992, Colin McLarty, Elementary Categories, Elementary Toposes, Clarendon Press, →ISBN, page 77:
topics: category-theory
computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
synonyms: opposite
glosses: Being the dual of some other category; containing the same objects but with source and target reversed for all morphisms.
Synonyms: word: binary
word: double
word: dual
word: twin
word: twofold
Hypernyms: word: plural
Hyponyms: word: bipartite
word: dimerous
topics: botany
biology
natural-sciences
word: duplex
word: dyadic
word: bipartible
word: bipartile
Derived terms: bidual
codual
coduality
dual audio
dual-band
dual boot
dual-boot
dual-braked
dual cab
dual-capable aircraft
dual citizen
dual citizenship
dual-clutch gearbox
dual-coding theory
dual control
dual degree
dual earner
dual economy
dual-edged sword
dual-energy X-ray absorptiometry
dual-exceptional
dual federalism
dual-frequency
dual graph
dual heritage
dual house
dualic
dualie
dualisation
dualism
dualist
dualistic
duality
dualization
dualize
dually
dual mandate
dual meet
dual mode
dual-mode
dual monastery
dual nationality
dual offence
dual phenomenology
dual photon absorptiometry
dual polyhedron
dual-ported
dual primary
dual-purpose
dual resident
dual school
dual-sector model
dual sensory impaired
dual-SIM
dual SIM
dualski
dual tone multi-frequency
dual-tropic
dual-use
dual-use research of concern
dual-voltage
duloxetine
Hodge dual
isodual
nondual
non-self-dual
predual
pseudodual