opacity

名词 opacity:

1. the phenomenon of not permitting the passage of electromagnetic radiation
2. incomprehensibility resulting from obscurity of meaning
   同义词：opaqueness
3. the quality of being opaque to a degree; the degree to which something reduces the passage of light
   同义词：opaqueness

o.pac.i.ty

n.（名词）
【复数】 o.pac.i.ties
The quality or state of being opaque.
黑暗：变暗或变黑的性质和状态
Something opaque.
阴暗的事物

Obscurity; impenetrability.
晦涩；难解
Dullness of mind.
愚蠢

来源：
French opacité
法语 opacité
from Old French
源自 古法语
from Latin op3cit3s
源自 拉丁语 op3cit3s
from op3cus [dark]
源自 op3cus [暗的]