altocumulus
noun /ˌæltəʊˈkjuːmjʊləs/
/ˌæltəʊˈkjuːmjʊləs/
[uncountable, countable] (plural altocumuli
(specialist) /ˌæltəʊˈkjuːmjʊlaɪ/, /ˌæltəʊˈkjuːmjʊliː/
/ˌæltəʊˈkjuːmjʊlaɪ/, /ˌæltəʊˈkjuːmjʊliː/
)- a layer of round clouds with flat bottoms lying at medium height, or one of the clouds that form this layer
高积云 词源late 19th cent.: from modern Latin alto- (from Latin altus ‘high’) + cumulus.