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Intermediate Dictionary
       

al·gae

algae

 
pronunciation:
ael ji
part of speech: noun
definition: organisms that live mainly in the water and make their food through photosynthesis. Algae are different from plants in that they have no true leaves, roots, or stems. Seaweeds are one form of algae, but there are many others, including a large number that cannot be seen without a microscope. "Algae" is the plural form of the word "alga."
Fish feed on the algae in the pond.There is some green algae growing on the side of the fish tank.