ASTIGMATISM


Meaning of ASTIGMATISM in English

as ‧ tig ‧ ma ‧ tis ‧ m /əˈstɪɡmətɪz ə m/ BrE AmE noun [uncountable]

[ Date: 1800-1900 ; Origin: ↑ a- 2 + Greek stigma 'mark, point' ; because there is no point at which light focuses ]

difficulty in seeing clearly that is caused by a change in the inner shape of the eye

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