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red algae

plural noun

, Biology.
  1. marine algae of the phylum Rhodophyta, in which the chlorophyll is masked by a red or purplish pigment.


red algae

plural noun

  1. the numerous algae that constitute the phylum Rhodophyta , which contain a red pigment in addition to chlorophyll. The group includes carrageen, dulse, and laver Also calledred seaweed
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of red algae1

First recorded in 1850–55

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red algaredan