Opacity refers to the characteristic of being hard to see through or understand. It means something is unclear, obscured, or difficult to perceive. Full definition
Yes, they fail to fulfill the full opacity of the Velvetines liquid lipstick look, but they beat the Velvetines in comfort, and considering they're a cheaper and super comfortable option for anyone who isn't convinced the Velvetines are worth the money, that brings the products out even in my eyes. (missamymay.com)
Instead of an electrochemical reaction, a physical reaction causes a change in opacity with just a flick of a switch and a touch of silver. (treehugger.com)
The long - term trends identified in the reanalyses and the OLR measurements are nevertheless consistent with the notion of increasing opacity for IR light, elevation of the OLR emission level, and convective activity. (link.springer.com)