spirogyra

noun

spi·​ro·​gy·​ra ˌspī-rə-ˈjī-rə How to pronounce spirogyra (audio)
: any of a genus (Spirogyra) of freshwater green algae with spiral chloroplasts

Examples of spirogyra in a Sentence

Recent Examples on the Web Specialists reckon that human run-off contributed to the lake’s latest crisis: the sudden and widespread appearance of a new form of algae, spirogyra. The Economist, 22 Feb. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'spirogyra.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

borrowed from New Latin Spirogyra, genus name, from Latin spīra "coil, twist, whorl" + Greek -o- -o- + gȳrá, feminine of gȳrós "curved, rounded" — more at spire entry 3, gyre entry 1

Note: The genus was introduced by the German botanist Johann Heinrich Friedrich Link (1767-1851) in "Epistola de algis aquaticis in genera disponendis," Horae physicae Berolinensis collectae ex symbolis virorum doctorum, edited by Christian Nees von Esenbeck (Bonn, 1820), p. 5.

First Known Use

1875, in the meaning defined above

Time Traveler
The first known use of spirogyra was in 1875

Dictionary Entries Near spirogyra

Cite this Entry

“Spirogyra.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spirogyra. Accessed 16 Apr. 2024.

Kids Definition

spirogyra

noun
spi·​ro·​gy·​ra ˌspī-rə-ˈjī-rə How to pronounce spirogyra (audio)
: any of a genus of freshwater green algae with spiral chloroplasts

More from Merriam-Webster on spirogyra

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!