red-algae

red algae

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

Origin:
1850–55

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
red algae
 
pl n
Also called: red seaweed the numerous algae that constitute the phylum Rhodophyta, which contain a red pigment in addition to chlorophyll. The group includes carrageen, dulse, and laver

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