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English definition of “additional”

additional

adjective uk   /əˈdɪʃ.ən.əl/ us  
B2 extra: additional costs/problems There will be an extra charge for any additional passengers.Also, extra, and in addition
additionally
adverb uk   /-i/ us  
B2 Additionally (= also), we request a deposit of $200 in advance.Also, extra, and in addition
(Definition of additional from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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