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Definition of additional adjective from the Oxford Advanced American Dictionary

Oxford3000

additional

adjective
/əˈdɪʃənl/ additional pronunciation American
 
more than was first mentioned or is usual
synonym extraadditional resources/funds/securityThe government provided an additional $25 million to expand the service. additionally adverb synonym in additionAdditionally, the bus service will run on Sundays, every two hours.