calvus

[kal-vuh s]
adjective Meteorology.
  1. (of a cumulonimbus cloud) having its upper portion changing from a rounded, cumuliform shape to a diffuse, whitish, cirriform mass with vertical striations.

Origin of calvus

< New Latin, Latin: literally, bald
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of calvus