noun
: a felted scum of dead algae (as members of the genera Spirogyra or Cladophora ) often found stranded after high water ; also : an alga that is a constituent of such scum
noun
: a felted scum of dead algae (as members of the genera Spirogyra or Cladophora ) often found stranded after high water ; also : an alga that is a constituent of such scum
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012