Definition of nostoc in US English:

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

    • ‘The Chinese cultivate nostoc, since its gelatinous texture appeals to their palate.’

Origin

Early 17th century: name invented by Paracelsus.

Pronunciation

nostoc

/ˈnästäk/