名詞 refraction:

1. the change in direction of a propagating wave (light or sound) when passing from one medium to another
2. the amount by which a propagating wave is bent
   同義詞：deflection, deflexion

1. Having one direction along which double refraction of light does not take place. Used of a crystal.
   單軸晶體的有一個(gè)方向的，沿此方向不發(fā)生光的雙折射。用于晶體

re.frac.tion

n.（名詞）
The turning or bending of any wave, such as a light or sound wave, when it passes from one medium into another of different density.
折射： 當(dāng)光或聲波等物質(zhì)從一個(gè)媒體進(jìn)入別一個(gè)密度不同的媒體中時(shí)產(chǎn)生的轉(zhuǎn)向或折回
Astronomy The apparent change in position of celestial objects caused by the bending of light rays entering Earth`s atmosphere.
【天文學(xué)】 大氣折射：由于天體的光線進(jìn)入地球大氣層時(shí)發(fā)生折射而造成的其位置明顯改變
Medicine
【醫(yī)學(xué)】
The ability of the eye to bend light so that an image is focused on the retina.
眼睛的折射力：眼睛折射光線的能量，從而使物體形象集中于視網(wǎng)膜上
Determination of the refractive characteristics of the eye.
屈光度測(cè)定：對(duì)眼睛折射特性的測(cè)定

【引伸】
refrac.tional 或
refrac.tive
adj.（形容詞）
refrac.tively
adv.（副詞）
refrac.tiveness 或
re.fractiv.ity