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Altocumulus (Ac) (Renou 1855)


Definition of Altocumulus


White or grey, or both white and grey, patch, sheet or layer of cloud, generally with shading, composed of laminae (a layer or layers), rounded masses, rolls, etc., which are sometimes partly fibrous or diffuse and which may or may not be merged; most of the regularly arranged small elements usually have an apparent width of between 1° and 5°.

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