opacify

Render less transparent

To opacify is to make something opaque—less transparent or translucent.

The term appears mainly in technical contexts: glass opacifies when treated with certain chemicals, cataracts opacify the lens of the eye, and radiologists use contrast agents to opacify blood vessels for imaging.

The noun is opacification.

obscuring

veil

Fabric that obscures

cloak · cloud · fog · haze · mist · dim · blur · diffuse · shade · filter

coating

frost

Thin ice coating

  • tintFaint color addition
  • matteNon-reflective surface finish
  • glazeThin lustrous coating

enamel · lacquer · varnish · whitewash · film · laminate · spray · paint · stain · coat

medical

cataract

Clouded eye lens

corneal · lesion · emulsion · infiltrate · degeneration · cloudiness · turbidity · vitreous · crystalline · pathology

radiology

contrast

Notable difference between things

  • bariumSoft silvery alkaline element
  • iodineAntiseptic element, atomic fifty-three
  • dyePigment for changing hues

imaging · fluoroscopy · angiography · enhancement · visualization · tracer · injection · marker · scan · diagnostic

Opposites
transparency/clarity

opacifyclarify

Make something understandable

clear · elucidate · illuminate · brighten · demystify

Family

opacity, opacifier, opacifying, opacifies

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