Supplementary things are added to something in order to improve it.
...the question of whether or not we need to take ~ vitamins...
Provide them with additional background or with ~ information.
= extra
ADJ: usu ADJ n
Supplementary things are added to something in order to improve it.
...the question of whether or not we need to take ~ vitamins...
Provide them with additional background or with ~ information.
= extra
ADJ: usu ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012