: a fairly uniform high thin cloud layer darker than cirrus and often covering the entire sky see cloud illustration
Example Sentences
Recent Examples on the WebThe three main types are cirrus, cirrostratus and cirrocumulus. Anna Kaufman, USA TODAY, 17 July 2022 High clouds are classified as either cirrus, cirrostratus, or cirrocumulus. Catherine Zuckerman, National Geographic, 24 Apr. 2019