Definition of Zygophyceae
in some especially former classifications
: a class that comprises greenish unicellular or filamentous algae having conspicuous chromatophores and multiplying by simple division and by conjugation and that includes the desmids and pond scums and usually also the diatoms — compare zygnematales
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Origin and Etymology of zygophyceae
New Latin, from zyg- + -phyceae
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