The beginnings of tin-opacification of pottery glazes.
From the en.wikipedia.org
As a result, the concentration of the absorbing or scattering particles in the glaze could determine the degree of opacification.
From the en.wikipedia.org
After surgery, patients may develop a condition called posterior capsular opacification, which is often referred to as a secondary cataract.
From the nytimes.com
More examples
The process of becoming cloudy or opaque
The action of making something opaque or cloudy
(opacified) Made to be opaque to X-ray irradiation, due to the introduction of contrast material - as in a barium study (Upper GI, Barium Enema), arteriogram, myelogram, etc
(Opacified) Glass which has been fully enamelled or painted on one side to make it non-transparent.