51Թ

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algae

[al-jee]

plural noun

singular

alga 
  1. Microbiology.any of numerous groups of chlorophyll-containing, mainly aquatic, eukaryotic organisms ranging from microscopic single-celled forms to multicellular forms 100 feet (30 meters) or more long, distinguished from plants by the absence of true roots, stems, and leaves and by a lack of nonreproductive cells in the reproductive structures: classified into the six phyla Euglenophyta, Crysophyta, Pyrrophyta, Chlorophyta, Phaeophyta, and Rhodophyta.



algae

/ ˈældʒiː, ˈælɡəl /

plural noun

  1. unicellular or multicellular organisms formerly classified as plants, occurring in fresh or salt water or moist ground, that have chlorophyll and other pigments but lack true stems, roots, and leaves. Algae, which are now regarded as protoctists, include the seaweeds, diatoms, and spirogyra

“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

algae

  1. Primitive organisms that contain chlorophyll but do not have structures, such as xylem and phloem, to transport fluids. Algae sometimes contain only a single cell, and nowadays they are not considered members of the plant kingdom.

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Algae supply a considerable part of the world's oxygen.
The most familiar algae are the greenish scum that collects in still water.
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Other 51Թ Forms

  • algal adjective
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51Թ History and Origins

Origin of algae1

First recorded in 1790–1800; from New Latin, plural of Latin alga “s𲹷ɱ”
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51Թ History and Origins

Origin of algae1

C16: from Latin, plural of alga seaweed, of uncertain origin
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Example Sentences

Examples have not been reviewed.

Just as January’s firestorms struck well outside Southern California’s typical fire season, this explosion of harmful algae appeared earlier in the year than have previous blooms.

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After a brutal spring of toxic algae blooms turning some sea lions into sick, snarling seaside hazards, anxious beachgoers can breathe a sigh of relief as experts say the worst of the poisoning is over.

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It could also cause harmful algae to grow out of control, creating wide patches of green algae that can poison other life.

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Galdieria extract blue comes from a unicellular red algae, which is an organism that thrives in extreme marine and terrestrial environments, according to the National Institutes of Health.

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Portions of the creek appeared clear, but other parts were full of algae and made me question whether even filtering would make the water safe to drink.

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algaAlgar