1. making something opaque or less transparent
Usage: present participle of opacify

1. having the quality of making something opaque
Usage: technical

Examples

• The dentist used an opacifying agent to make the tooth visible on the X-ray.
• Steam was opacifying the bathroom mirror after the hot shower.
• The opacifying cream helped block harmful UV rays from reaching the skin.
• Dust particles were opacifying the once-clear glass windows.
• The artist mixed an opacifying medium into the paint to reduce its transparency.
• Calcium deposits were gradually opacifying the aquarium glass.