Mammatus Definition
mə-mătəs, -mätəs, -mā-, mămə-təs
adjective
A cloud formation consisting of rounded, usually smooth protuberances that appear to hang down from the base of cumulonimbus or other clouds.
American Heritage
Origin of Mammatus
-
From Latin mammātus having breasts from mamma breast mā-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
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