Definition of algae noun from the Oxford Advanced American Dictionary

 

algae

 noun
noun
NAmE//ˈældʒi//
 
[uncountable, plural](alga
NAmE//ˈælɡə//
 
)
(technology)
 
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very simple plants with no real leaves, stems, or roots that grow in or near water, including seaweed
NAmE//ˈælɡəl//
 
adjective [only before noun] algal blooms/growth
See the Oxford Advanced Learner's Dictionary entry: algae