Cirrus

Cirrus may refer to:

Science

  • Cirrus (biology), any of various thin, thread-like structures on the body of an animal
  • Cirrus (crinoid), an articulated appendage in sea lilies
  • Cirrus (botany), a tendril
  • Infrared cirrus, in astronomy, filamentary structures seen in infrared light
  • Cirrus cloud, a type of cloud

    • Aviation

  • ADC Cirrus, a series of British aircraft engines in the 1920s
  • American Cirrus Engine (ACE), an aircraft engine manufacturer
  • Blackburn Cirrus Major, a British four-cylinder aircraft engine first run in 1936
  • Blackburn Cirrus Minor, a British four-cylinder aircraft engine first run in 1937
  • Cirrus Aero-Engines, a defunct British aircraft engine company
  • Cirrus Aircraft, an aircraft manufacturer in Duluth, Minnesota
  • Cirrus Airlines, a German airline in Saarbrücken, Germany
  • Cirrus (rocket), a German research rocket
  • Schempp-Hirth Cirrus, an Open-class sailplane
  • Schempp-Hirth Standard Cirrus, a Standard-class sailplane

    • Music

  • Cirrus (album), a 1974 release by Bobby Hutcherson
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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Cirrus

    Tendril

    In botany, a tendril is a specialized stem, leaf or petiole with a threadlike shape that is used by climbing plants for support, attachment and cellular invasion by parasitic plants, generally by twining around suitable hosts. They do not have a lamina or blade, but they can photosynthesize. They can be formed from modified shoots, modified leaves, or auxiliary branches and are sensitive to airborne chemicals, often determining the direction of growth, as in species of Cuscuta.

    History

    The earliest and most comprehensive study of tendrils was Charles Darwin's monograph On the Movements and Habits of Climbing Plants, which was originally published in 1865. This work also coined the term circumnutation to describe the motion of growing stems and tendrils seeking supports. Darwin also observed the phenomenon now known as tendril perversion, in which tendrils adopt the shape of two sections of counter-twisted helices with a transition in the middle.

    Biology of tendrils

    In the garden pea, it is only the terminal leaflets that are modified to become tendrils. In other plants such as the yellow vetch (Lathyrus aphaca), the whole leaf is modified to become tendrils while the stipules become enlarged and carry out photosynthesis. Still others use the rachis of a compound leaf as a tendril, such as members of the genus Clematis.

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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Tendril

    Cirrus (crinoid)

    A cirrus (plural cirri) is an articulated appendage projecting from an ossicle that forms part of the stalk of a crinoid. In sea lilies the stem forms a permanent attachment round which the cirri are arranged in whorls. The lowermost ones form a holdfast attaching the sea lily to the substrate.

    During the development of comatulid crinoids (feather stars), the stalk is lost apart from its topmost segment which remains attached to the calyx (central disc). In these crinoids, the cirri are attached to this segment and project from the underside of the crown. There are usually many cirri and they are used to cling on to a hard surface or grip the substrate as the animal moves slowly about. In species that live on rocks they are robust and curved but in species that live on soft substrates they are long and slender.

    References

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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Cirrus_(crinoid)

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    You Are (panacea)

    by: Cirrus

    Oh these tattered
    imaginary wings
    Want to make them real
    real
    Oh these many
    useless coverings
    Want to make throw away
    away
    You are the shelter in the winter rain
    You are the child underneath the pain
    You are
    Feeling heavy
    you won’t let it down
    It’s not their not
    their
    Sparrow falling
    until she’s on the ground
    Your not alone
    alone
    You are the caged one who is finally free
    You are the oasis in the desert heat
    You are the shelter in the winter rain
    You are the child underneath the pain
    You hold the answer though you can’t explain
    What you are to me




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