define rachis - EAS

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  1. Từ điển

    Tra cứu
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    rachis
    [ˈreɪkɪs]
    DANH TỪ
    rachis (danh từ) · rachides (danh từ số nhiều) · rhachis (danh từ) · rhachides (danh từ số nhiều)
    1. botany
      a stem of a plant, especially a grass, bearing flower stalks at short intervals.
      • the midrib of a compound leaf or frond.
    2. anatomy
      the vertebral column or the cord from which it develops.
      từ đồng nghĩa:
    3. ornithology
      the shaft of a feather, especially the part bearing the barbs.
      từ đồng nghĩa:
    GỐC
    late 18th century: modern Latin, from Greek rhakhis ‘spine’. The English plural -ides is by false analogy.
  2. Definition of rachis 1 : an axial structure: such as a (1) : the elongated axis of an inflorescence (2) : an extension of the petiole of a compound leaf that bears the leaflets b : the distal part of the shaft of a feather that bears the web
    www.merriam-webster.com/dictionary/rachis
    www.merriam-webster.com/dictionary/rachis
  3. Mọi người cũng hỏi
    What does rachis mean in biology?
    In zoology and microbiology. In vertebrates, rachis can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the rachis usually forms the supporting axis of the body and is then called the spine or vertebral column.
    en.wikipedia.org/wiki/Rachis
    What is the rachis of the vertebral column?
    In vertebrates a rachis can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the rachis usually forms the supporting axis of the body and is then called the spine or vertebral column. Rachis can also mean the central shaft of pennaceous feathers.
    en.wikipedia.org/wiki/Rachis
    What is the difference between an rachis and an axis?
    rachis - axis of a compound leaf or compound inflorescence. axis - the main stem or central part about which plant organs or plant parts such as branches are arranged.
    What is a rachis on a Dinosaur Feather?
    Current dinosaur feather fossils don't have a rachis; instead, the specimens show that dinos' feathers acted as a layer of warmth to protect against the elements. — Daisy Hernandez, Popular Mechanics, 5 Aug. 2019 According to Persons, flight feathers found on bird wings contain a hollow center called the rachis, from which the barbs protrude.
    www.merriam-webster.com/dictionary/rachis
  4. Rachis Definition & Meaning - Merriam-Webster

    https://www.merriam-webster.com/dictionary/rachis

    The meaning of RACHIS is an axial structure. an axial structure: such as; the elongated axis of an inflorescence; an extension of the petiole of a compound …

  5. Rachis - definition of rachis by The Free Dictionary

    https://www.thefreedictionary.com/rachis

    rachis - the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back" spinal column , spine , vertebral column , backbone , back notochord - a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates

  6. Rachis Definition & Meaning | Dictionary.com

    https://www.dictionary.com/browse/rachis

    rachis. [ rā ′kĭs ] Plural rachises rachides (răk′ĭ-dēz′, rā′kĭ-) A main axis or shaft, such as the main stem of an inflorescence, the stalk of a pinnately compound leaf, the shaft of a feather, or the

  7. Rachis - Wikipedia

    https://en.wikipedia.org/wiki/Rachis

    In vertebrates, rachis can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the rachis usually forms the supporting axis of the body and is then called the spine or vertebral column. Rachis can also mean the central shaft of pennaceous feathers.
    In the gonad of the invertebrate nematode C. elegans, a rachis is the central cel…

    Wikipedia · Nội dung trong CC-BY-SA giấy phép
  8. rachis - TheFreeDictionary.com

    https://www.thefreedictionary.com/rachises

    rachis - the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back" spinal column , spine , vertebral column , backbone , back notochord - a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates

  9. Rachis Meaning | Best 15 Definitions of Rachis

    https://www.yourdictionary.com/rachis

    What does rachis mean? The main shaft of a bird's feather, especially the part to which the barbs are attached. (noun)

  10. RACHIS English Definition and Meaning | Lexico.com

    https://www.lexico.com/en/definition/rachis

    noun plural noun rachides /ˈrakəˌdēz/ /ˈrā-/. (also rhachis) 1 Botany. A stem of a plant, especially a grass, bearing flower stalks at short intervals. ‘Inflorescences are the terminal toothbrush type, with five to 70 pairs of flowers on a rachis approx. 35-50 mm long.’. More example sentences.



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