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opacus

opacus

9.8
Being a cloud layer thick enough to block the sun or moon
  • adjective
  • Specialized
: opaco
  • Meteorologists observed a layer of nimbostratus opacus that completely hid the moon during the night.

Examples

  • When altostratus opacus forms, it can block sunlight and create a gloomy atmosphere.

  • The weather report mentioned stratocumulus opacus covering the sky, making the afternoon unusually dark.

  • The sky was filled with opacus clouds.

  • It is opacus today.

  • The weather report mentioned stratocumulus opacus covering the sky, making the afternoon unusually dark.

  • When altostratus opacus forms, it can block sunlight and create a gloomy atmosphere.

  • Meteorologists observed a layer of nimbostratus opacus that completely hid the moon during the night.

Antonyms

50 3.2

Clear enough to see things behind it, like glass

How Opaque

opacus
  • Specialized
9.8
overcast
17 1.4
cloudy
52 1.0
translucent
30 4.8
transparent
50 3.2

Surface Forms

opacus positive

Etymology

Opacus comes from Latin opacus, which means 'shaded' or 'dark'. It is the same root as opaque, meaning 'not letting light through', so as an adjective in weather it describes a cloud layer thick enough to hide the sun or moon.