Word Explorer
Children's
Dictionary Suite
Help
Help
Help
 
Elementary Dictionary
       

algae

 
pronunciation:
ael ji
part of speech: noun
definition: Algae are living things that live mainly in water and make their food by using light from the sun. Algae are similar to plants, but they are not usually considered to be plants because they are different in some ways. For example, algae don't have roots and leaves like plants do. Most forms of algae are very helpful for animals and people. Seaweed is a kind of algae, which many people eat and can also be used in making other things. Fish and other water animals use algae for food. "Algae" is a plural word. The singular form is "alga."
There is some green algae growing on the side of the fish tank.Some tiny forms of algae can be harmful to humans and other animals when they grow in very great numbers.