English

Definition of altocumulus noun from the Oxford Advanced Learner's Dictionary

 

altocumulus

 noun
noun
BrE BrE//ˌæltəʊˈkjuːmjʊləs//
 
; NAmE NAmE//ˌæltoʊˈkjuːmjʊləs//
 
[uncountable, countable] (pl. altocumuli
BrE BrE//ˌæltəʊˈkjuːmjʊlaɪ//
 
; NAmE NAmE//ˌæltoʊˈkjuːmjʊlaɪ//
 
; BrE BrE//ˌæltəʊˈkjuːmjʊliː//
 
; NAmE NAmE//ˌæltoʊˈkjuːmjʊliː//
 
)
(specialist)
 
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a layer of round clouds with flat bottoms lying at medium height, or one of the clouds which form this layer Word Origin late 19th cent.: from modern Latin alto- (from Latin altus ‘high’) + cumulus.
See the Oxford Advanced American Dictionary entry: altocumulus