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Our Word of the day is absquatulate: leave abruptly …

nostoc Pronunciation: /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 Paracelsus

nostoc in other Oxford dictionaries

Definition of nostoc in US English dictionary