nostocPronunciation: /ˈnɒstɒk/Definition of nostoc noun Biology a microorganism composed of beaded filaments which aggregate to form a gelatinous mass, growing in water and damp places and able to fix nitrogen from the atmosphere. Genus Nostoc, division Cyanobacteria Origin: early 17th century: name invented by Paracelsusnostoc in other Oxford dictionaries Definition of nostoc in the US English dictionary
