spirogyra

spirogyra

[spahy-ruh-jahy-ruh]
noun Botany.
a widely distributed filamentous freshwater green alga of the genus Spirogyra.

Origin:
1895–1900; < Neo-Latin, equivalent to spiro- spiro-2 + -gyra, alteration of Greek gŷros circle or gȳrós round

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World English Dictionary
spirogyra (ˌspaɪrəˈdʒaɪərə)
 
n
any green freshwater multicellular alga of the genus Spirogyra, consisting of minute filaments containing spirally coiled chloroplasts
 
[C20: from New Latin, from spiro-² + Greek guros a circle]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
spirogyra   (spī'rə-jī'rə)  Pronunciation Key 
Any of a genus of filamentous freshwater green algae having cylindrically shaped cells with spiral-shaped bands of chloroplasts. Species of Spirogyra reproduce asexually by cell division and fragmentation and sexually by conjugation. They form green scum on ponds, floated by the oxygen produced by photosynthesis.
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