Meaning of ADDITIONAL in English

/ əˈdɪʃənl; NAmE / adjective

more than was first mentioned or is usual

SYN extra :

additional resources / funds / security

The government provided an additional £25 million to expand the service.

►  add·ition·al·ly / -ʃənəli; NAmE / adverb

SYN in addition :

Additionally, the bus service will run on Sundays, every two hours.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.