additional

/əˈdɪʃənəl/ adjective [before noun]

Definition

› extra: 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 adjective from the Cambridge Business English Dictionary © Cambridge University Press)