opacus
- adjective
- Specialized
- Meteorologists observed a layer of nimbostratus opacus that completely hid the moon during the night.
Examples
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When altostratus opacus forms, it can block sunlight and create a gloomy atmosphere.
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The weather report mentioned stratocumulus opacus covering the sky, making the afternoon unusually dark.
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The sky was filled with opacus clouds.
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It is opacus today.
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The weather report mentioned stratocumulus opacus covering the sky, making the afternoon unusually dark.
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When altostratus opacus forms, it can block sunlight and create a gloomy atmosphere.
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Meteorologists observed a layer of nimbostratus opacus that completely hid the moon during the night.
Antonyms
How Opaque
Surface Forms
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.