Meaning of “additional” in the English Dictionary

"additional" in British English

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uk /əˈdɪʃ.ən.əl/ us /əˈdɪʃ.ən.əl/

B2 extra:

additional costs/problems
There will be an extra charge for any additional passengers.

More examples

  • The doctor has made an initial diagnosis, but there'll be an additional examination by a specialist.
  • They looked to the government for additional support.
  • An additional power switch for the radio is handily located next to the steering wheel.
  • An additional grant has enabled the team to push forward with research plans.
  • The education director is persevering in his attempt to obtain additional funding for the school.
adverb uk /əˈdɪʃ.ən.əl.i/ us /əˈdɪʃ.ən.əl.i/


Additionally (= also), we request a deposit of $200 in advance.

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

"additional" in American English

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additionaladjective [ not gradable ]

us /əˈdɪʃ·ə·nəl/

put with something else to increase the number or amount or to make it more important:

There’s no additional charge for children under twelve.

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

"additional" in Business English

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additionaladjective [ before noun ]

uk /əˈdɪʃənəl/ us


We plan to open an additional 10 to 12 stores next year.
There will be no additional charge for this service.
an additional $50,000/£1million/€35 billion, etc.

ENVIRONMENT resulting in a reduction in the amount of carbon dioxide gas that is released into the environment, which would not have happened without trading carbon credits:

Would the project have been implemented, even without the sales of the carbon offsets? If the answer is yes, the project is not “additional.”

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