oomycete(redirected from Water molds)
Any of various filamentous, often parasitic heterokonts of the division Oomycota, characterized by bearing female gametes in oogonia. Oomycetes include the downy mildews and other species that cause plant diseases such as late blight. Also called water mold.
(Botany) any organism of the phylum Oomycota (or Oomycetes), formerly classified as fungi but now usually included in the kingdom Protoctista or Protista: includes the water moulds and downy mildews