what are altocumulus clouds?

Question

what they mean

Answer 1

Altocumulus (alto, "high", cumulus, "heaped") is a cloud belonging to a class characterized by globular masses or rolls in layers or patches, the individual elements being larger and darker than those of cirrocumulus and smaller than those of stratocumulus. Like other cumulus clouds, altocumulus signifies convection. It is usually white or gray, and often occurs in sheets or patches with wavy, rounded masses or rolls. Altocumulus often are seen preceding a cold front, and their presence on a warm, humid, summer morning frequently signals the development of thunderstorms later in the day.
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Answer 2

Depending upon the height, the clouds are classified into three catagories.They are low,medium and high clouds.Altocumulus is a medium cloud(approximately 2 to 7 Kms).Usually the formation of this type of cloud is an indication of approaching bad weather.