noun mam·ma·to·cumulus \mə¦mātō, ma¦mātō+\

Definition of mammatocumulus

  1. :  a cumulus or cumulostratus storm cloud having breast-shaped protuberances below —called also festoon cloud

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Origin and Etymology of mammatocumulus

New Latin, from Latin mammatus of the breast + New Latin -o- + cumulus

Seen and Heard

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a rounded knoll or a ridge of ice

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