algal bloom

noun
1.
bloom1 (def 13).
Examples from the web for algal bloom
  • Though a natural phenomenon, the algal bloom was exacerbated by last year's heavy spring runoff.
  • The great number of algal cells in the water results in what is called an algal bloom.
  • It is experiencing an algal bloom of new vocabulary.
  • Scientists use the term harmful algal bloom to describe an algal bloom that can have a negative impact on the environment.