
1) Blue-green algae 2) Cyanobacteria 3) Fresh-water algae 4) Freshwater alga 5) Genus of blue-green algae
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https://www.crosswordclues.com/clue/nostoc

• (n.) A genus of algae. The plants are composed of moniliform cells imbedded in a gelatinous substance. • (n.) A genus of algae. The plants are composed of moniliform cells imbedded in a gelatinous substance.
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http://thinkexist.com/dictionary/meaning/nostoc/

genus of blue-green algae with cells arranged in beadlike chains that are grouped together in a gelatinous mass. Ranging from microscopic to ... [1 related articles]
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http://www.britannica.com/eb/a-z/n/57

<botany> A genus of algae. The plants are composed of moniliform cells imbedded in a gelatinous substance. ... Nostoc commune is found on the ground, and is ordinarily not seen; but after a rain it swells up into a conspicuous jellylike mass, whish was formerly supposed to have fallen from the sky, whence the popular names, fallen star and st...
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http://www.encyclo.co.uk/local/20973
Nos'toc noun [ French]
(Botany) A genus of algæ. The plants are composed of moniliform cells imbedded in a gelatinous substance. »
Nostoc commune is found on the ground, and is ordinarily not seen; but after a rain it swells up into a conspicuous jellylike mass, whish was formerly su...
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http://www.encyclo.co.uk/webster/N/35

[
n] - found in moist places as rounded jellylike colonies
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http://www.webdictionary.co.uk/definition.php?query=nostoc
noun found in moist places as rounded jellylike colonies
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https://www.encyclo.co.uk/local/20974

any freshwater, blue-green alga of the genus Nostoc, often occurring in jellylike colonies in moist places.
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https://www.infoplease.com/dictionary/nostoc
No exact match found.