Algae (noun)

  1. A large group of diverse, mainly aquatic, simple, plant-like organisms, ranging from single-celled forms to large seaweeds.
  2. Microscopic plants that are found in water and are capable of photosynthesis.

Origin:

Late 18th century: modern latin, singular alga, from latin, "seaweed", from greek algos "pain" (because of the slimy texture of seaweed).

Examples:

  1. The lake had a thick growth of algae.
  2. Algae is an important source of oxygen in the ocean.
  3. Algae can be used as a source of biofuel.
  4. Algae is used as a food supplement for humans and animals.
  5. Algae is also used in cosmetic products.
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