adjective
[ usually before noun ] not part of the usual course of work or studies at a school or college :
She's involved in many extra-curricular activities .
adjective
[ usually before noun ] not part of the usual course of work or studies at a school or college :
She's involved in many extra-curricular activities .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005