to make yourself/sb familiar with sth or become used to it :
It took him a while to accustom himself to the idea.
to make yourself/sb familiar with sth or become used to it :
It took him a while to accustom himself to the idea.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005