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1. Oxford Dictionary

   refraction

   • IPA[rɪˈfrakʃn]

   英式

   • n.
     the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.；change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front.

   • noun: refraction

2. • 釋義

   n.

   名詞

   • 1. the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
   • ▪ change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front.
   • ▪ measurement of the focusing characteristics of an eye or eyes.