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 (sī′ə-nō-băk-tîr′ē-əm, sī-ăn′ō-)
n. pl. cy·a·no·bac·te·ri·a (-tîr′ē-ə)
Any of various photosynthetic bacteria of the phylum Cyanobacteria that are generally blue-green in color and are widespread in marine and freshwater environments, with some species capable of nitrogen fixation. Also called blue-green alga, blue-green bacterium.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


pl n, sing -rium (-rɪəm)
(Microbiology) a group of photosynthetic bacteria (phylum Cyanobacteria) containing a blue photosynthetic pigment. Former name: blue-green algae
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

blue′-green` al′gae
any of various groups of prokaryotic microorganisms of the phylum Cyanophyta, containing chlorophyll and a blue pigment. Also called cyanobacteria.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cyanobacteria - predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyllcyanobacteria - predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
eubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagella
class Cyanobacteria, class Cyanophyceae, Cyanophyceae - photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae
nostoc - found in moist places as rounded jellylike colonies
trichodesmium - large colonial bacterium common in tropical open-ocean waters; important in carbon and nitrogen fixation
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Known as cyanobacteria, bluegreen algae occurs naturally in inland waters, estuaries and the sea - and it can be toxic to both humans and animals.
Concerns have been raised about the presence of potentially toxic bluegreen algae in Cooper Park's pond.
Krumholz will lead a global research team to study freshwater toxic cyanobacteria, or bluegreen algae, blooms, which threaten freshwater lakes and pose substantial health risks to humans, pets, livestock and wildlife.
And, according to Blue Cross, bluegreen algae poisoning often causes fatal liver failure.
CARDIFF'S Roath Park Lake has been temporarily closed due to the presence of bluegreen algae - a form of bacteria which can kill dogs.
Posting on Twitter, the council said: "Due to the heatwave, bluegreen algae has now developed in water near Tremains Wood, Brackla.
"Nitrogen acts like a fertilizer, causing massive algae outbreaks, including bluegreen algae, that float on the water's surface," says Christopher Kilian, CLF Director of Strategic Litigation.