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cap cloud

American  

noun

Meteorology.
  1. a stationary cloud directly above an isolated mountain peak.

  2. pileus.


Etymology

Origin of cap cloud

First recorded in 1860–65

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Thus, the cloud is present only over the top of the mountain and just downwind, forming a hat-like cap cloud that is often circular.

From Washington Post

Lovely little cap cloud over Rainier this afternoon.

From Seattle Times