as‧tig‧ma‧tis‧m /əˈstɪɡmətɪz
əm/
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
[TahlilGaran] Dictionary of Contemporary English ▲