OPTICAL


Meaning of OPTICAL in English

op ‧ ti ‧ cal /ˈɒptɪk ə l $ ˈɑːp-/ BrE AmE adjective

relating to machines or processes which are concerned with light, images, or the way we see things:

microscopes and other optical instruments

—optically /-kli/ adverb

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.