CEFR B2

cirrostratus cloud

noun phrase

Meaning

A thin, uniform veil of cloud that often covers the entire sky, typically composed of ice crystals and appearing as a milky veil or a halo around the sun or moon.

Examples

  • The cirrostratus cloud layer was so thin that we could still see the sun shining through it.
  • Pilots need to be aware of cirrostratus clouds because they can indicate the presence of a frontal system.