alga meaning

[ 'ælgə ] Pronunciation:   "alga" in a sentence
  • Noun: alga  algu
    1. Primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves
      - algae

    Derived forms: algas

    See also: algal, algoid

    Type of: protoctist

    Encyclopedia: Alga Alga, Jalal-Abad Alga, Kyrgyzstan

  • [Medicine]
    A major group of polyphyletic organisms of extremely varied morphology and physiology,mostly photosynthetic,but distinguished from plants by their complex form of sexual reproduction. They are freshwater and marine,terrestrial and subterranean; some are neustonic (living at the interface of water and the atmosphere). They live in various protozoa and within other plants. They live also in soil and on soil surfaces,on long-persistent snows,and in Antarctic rocks. Thermophilic algae inhabit hot springs. (From Webster,3d ed; from Bold & Wynne,Introduction to the Algae,2d ed,pp1-6) n pl al·gae also algas : a plant or plantlike organism of any of several phyla, divisions, or classes of chiefly aquatic usu. chlorophyll-containing nonvascular organisms of polyphyletic origin that usu. include the green, yellow-green, brown, and red algae in the eukaryotes and the blue-green algae in the prokaryotes — al·gal adj


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  1. an autotrophic, unicellular, green alga presents the minimum of specialization.
  2. simple organisms such as bacteria and alga have been found fossil in rocks more than 3000 m. y. old.
  3. study on pharmacologic progress of polysaccharide of marine alga
  4. that's why no reptile degenerates to a bluegreen alga
  5. food additive-sodium alga acid

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