Usage examples (6)

• The tissue in the eye's cornea may opacify and the patient may go blind
• The westering sun slanted in through the window and he didn't bother to push the contact that would opacify the glass.
• While cause for laughter, these manipulations, like Google's systematic search-and-destroy efforts, serve to deaden, opacify, obscure, and delete information.
• To activate opacify you need to go to the appearance tab of the preference dialog and check in opacify checkbox.