·

algae (EN)
noun

This word can also be a form of:
alga (noun)

noun “algae”

singular algae, uncountable
  1. a collective term for algal organisms (used as uncountable singular)
    The algae in the pond was slimy.
  2. a particular kind of algal organism (used as countable singular)
    Chlorella is an algae.