Definition of “dual” - English Dictionary

british dictionary

“dual” in British English

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dualadjective [ before noun ]

uk /ˈdʒuː.əl/ us /ˈduː.əl/

C1 with two parts, or combining two things:

This room has a dual purpose, serving as both a study and a dining room.
the dual role of chairman and chief executive
dual controls

two sets of controls in a car, one for the person who is learning to drive and one for the teacher

dual nationality/citizenship

the nationality of two countries at the same time:

She has dual British and American nationality.

More examples

  • Everything he says has a dual meaning.
  • Although she had the dual advantages of wealth and beauty, she did not have a happy life.
  • These painkillers have the dual strength of ibuprofen and codeine, for fast and effective relief.
  • A product with dual action - that kills bacteria and removes stains - is really the best.
  • The community hall was designed for dual use, by the school during school hours and by the public at other times.

(Definition of “dual” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“dual” in American English

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dualadjective [ not gradable ]

us /ˈdu·əl/

having two parts, or combining two things:

This room serves a dual purpose – it’s both a study and a guest room.

Someone with dual citizenship is a citizen of two countries at the same time.

(Definition of “dual” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“dual” in Business English

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dualadjective [ before noun ]

uk /ˈdjuːəl/ us

having two parts, features, etc.:

In June, he bowed to shareholder pressure and split his dual role as chief executive and chairman.
With more families requiring dual incomes, people have less time to shop and run errands.
All cars manufactured after 1998 are required to have dual airbags.

(Definition of “dual” from the Cambridge Business English Dictionary © Cambridge University Press)

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