spirogyra definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Spirogyra, family Zygnemataceae) of freshwater green algae containing spiral chlorophyll bands in their cylindrical cells
Origin: Modern Latin ; from Classical Greek speira, spire plush gyros, a ring: see gyrate
spirogyra definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of various filamentous freshwater green algae of the genus Spirogyra, having chloroplasts in spirally twisted bands.
Origin: New Latin Spīrogȳra, genus name : Latin spīra, coil; see spire2 + Greek gūros, ring.
spirogyra - Science Definition
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.