astigmatic
/,æstig'mætik/
tính từ
- (y học) loạn thị
- (vật lý) Astimatic
Định nghĩa tiếng Anh
a. of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images