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Opacity vs Translucent - What's the difference?

opacity | translucent |

As a noun opacity

is (uncountable) the state or quality of being opaque, not allowing light to pass through.

As an adjective translucent is

allowing light to pass through, but diffusing it.

opacity

English

Noun

  • (uncountable) The state or quality of being opaque, not allowing light to pass through
  • We could not see the sandbar due to the opacity of the muddy water.
  • (uncountable) The state or quality of being inaccessible to understanding
  • The opacity of these decisions is troubling.
  • (optics, countable) A measure of relative impenetrability to electromagnetic radiation such as light.
  • The opacity of a clean glass window is near zero.

    Synonyms

    * opaqueness

    Coordinate terms

    * transparency

    translucent

    Adjective

    (en adjective)
  • Allowing light to pass through, but diffusing it.
  • * 1913 , , The Day of Days , ch. 1:
  • The window-panes, encrusted with perennial deposits of Atmosphere, were less transparent than translucent .
  • * 1921 , , Jill the Reckless , ch. 21:
  • On the windows of the nearer buildings the sun cast glittering beams, but further away a faint, translucent mist hid the city.
  • Clear, lucid, or transparent.
  • * 1884 , Henry J. Ramsdell, Life and Public Services of Hon. James G. Blaine , Hubbard, pp. 105-106:
  • Mr. Blaine's powers and disposition shone resplendent. . . . the gavel in his practised hand, chiming in with varied tones that aptly enforced his words, from the sharp rat-tat-tat that recalled the House to decorum, to the vigorous thunder that actually drowned unparliamentary speech; rulings, repartee, translucent explanation flashing from his lips as quick as lighting.
  • * 1904 , , The Club of Queer Trades , ch. 4:
  • "I was startled at your not seeing it from the beginning. The man is a translucent liar and knave."
  • * 1919 , , The Lords of the Wild , ch. 3:
  • [T]he sun was in its greatest splendor, and the air was absolutely translucent . The lake and the mountains sprang out, sharp and clear.

    Coordinate terms

    * opaque * transparent