[ə'stigmətizəm]
astigmatism
n. 散光

词形变化:

副词:astigmatically 形容词:astigmatic

英英解释:

名词 astigmatism:

  1. (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
  2. 同义词:astigmia
  3. (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
  4. 同义词:astigmia