/ daɪˈɒptrɪks; NAmE -ˈɑːp-/ noun
[ U ] ( physics ) the scientific study of refraction (= the way light changes direction when it goes through glass, etc.)
► di·op·tric / daɪˈɒptrɪk; NAmE -ˈɑːp-/ adjective
/ daɪˈɒptrɪks; NAmE -ˈɑːp-/ noun
[ U ] ( physics ) the scientific study of refraction (= the way light changes direction when it goes through glass, etc.)
► di·op·tric / daɪˈɒptrɪk; NAmE -ˈɑːp-/ adjective
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005