Opacity
Pronunciation : O*pac"i*ty
Part of Speech : n.
Etymology : [L. opacitas: cf.F. opacit?.]
Definition : 1. The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness.
2. Obscurity; want of clearness. Bp. Hall.
Source : Webster's Unabridged Dictionary, 1913