Opacity



GRE

解释

GRE 红宝书

• n. 不透明性, 晦涩
• ［英］ n. 不透明性, 晦涩 ( the quality of being opaque)
• ［类］ opacity : light / impermeability : fluid ( 不透明光透不过 / 不可渗透液体透不过) 反义词: transparency ( 透明性)
• ［例］ the opacity of frosted glass

Webster Collegiate

noun (plural -ties)

• Etymology: Middle French opacité shadiness, from Latin opacitat-, opacitas, from opacus shaded, dark
• Date: 1560
• 1.
  • a. obscurity of sense ; unintelligibleness
  • b. the quality or state of being mentally obtuse ; dullness
• 2. the quality or state of a body that makes it impervious to the rays of light; broadly the relative capacity of matter to obstruct the transmission of radiant energy
• 3. an opaque spot in a normally transparent structure (as the lens of the eye)

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