Any member of the genus Nostoc of cyanobacteria, found in a variety of environmental niches, that form colonies composed of filaments of moniliform cells in a gelatinoussheath.
Origin
From the genus name.
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.