refractionn. 折光、折射屈光學術名詞折射：地理學、物理學、海洋科學、海事、力學、化學術語折射作用：海洋科學折光差：海事英文釋義the change in direction of a propagating wave (light or sound) when passing from one medium to anotherthe amount by which a propagating wave is bent