Definitions

1. noun

simple aquatic plants, typically green, yellow-green, or red, and often photosynthetic, that are usually found in freshwater or marine environments.

“The lake’s water is teeming with various species of algae.”

2. noun

a class of eukaryotic organisms that are primarily aquatic and photosynthetic, including seaweeds, kelp, and slime molds.

“The marine biologist studied the diverse types of algae found in the coral reef ecosystem.”

3. noun

a substance consisting of the bodies of algae, especially when used as a food or nutrient supplement, such as in the production of algal oil or algal protein.

“The company uses algae as a sustainable source of protein in their animal feed products.”