additional
adjective [ before noun ]
uk/əˈdɪʃənəl/ usextra:
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.”