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rachis    
n. 脊椎,脊柱,花轴

脊椎,脊柱,花轴

rachis
n 1: axis of a compound leaf or compound inflorescence
2: the series of vertebrae forming the axis of the skeleton and
protecting the spinal cord; "the fall broke his back" [synonym:
{spinal column}, {vertebral column}, {spine}, {backbone},
{back}, {rachis}]



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  • Rachis - Wikipedia
    In plants, a rachis is the main axis of a compound structure It can be the main stem of a compound leaf, such as in Acacia or ferns, or the main, flower-bearing portion of an inflorescence above a supporting peduncle
  • RACHIS Definition Meaning - Merriam-Webster
    The meaning of RACHIS is an axial structure
  • RACHIS Definition Meaning | Dictionary. com
    Rachis definition: the axis of an inflorescence when somewhat elongated, as in a raceme See examples of RACHIS used in a sentence
  • What does rachis mean? - Definitions. net
    Rachis is a term used in biology to refer to the main stem or axis of a plant or animal structure, from which other parts such as branches, leaves, or feathers extend or grow It can refer to the main shaft of an inflorescence in plants, spine in vertebrates, or central shaft in feathers of birds
  • Rachis - an overview | ScienceDirect Topics
    The shoot apex elongates into the main axis of the inflorescence, which is called the rachis The rachis tapers off toward the top and is grooved longitudinally It possesses three types of hairs: (i) the fine types spread in the rachel furrows; (ii) the long hairs on the rachel ridges; and (iii) the scarbid hairs on the ridges
  • rachis - Wiktionary, the free dictionary
    rachis (plural rachises or rachides) (obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine [17th–19th c ] (zoology) An anatomical shaft or axis in a marine invertebrate [from 18th c ]
  • RACHIS definition and meaning | Collins English Dictionary
    an inflorescence in the form of a flat-topped flower cluster with the oldest flowers at the periphery This type of raceme occurs in the candytuft Which part of a plant am I? 3 meanings: 1 botany the main axis or stem of an inflorescence or compound leaf 2 ornithology the shaft of a feather, esp the Click for more definitions
  • RACHIS | English meaning - Cambridge Dictionary
    RACHIS definition: 1 the central stem of a leaf or flower spike that has several parts: 2 the spine (= line of… Learn more
  • Rachis | definition of rachis by Medical dictionary
    1 a thornlike process or projection; called also acantha and spina 2 the rigid bony structure in the midline of the back, composed of the vertebrae; called also backbone, spinal column, and vertebral column The spinal column is the axis of the skeleton; the skull and limbs are in a sense appendages
  • Rachis - Definition, Meaning Synonyms | Vocabulary. com
    rachis ˈreɪkɪs IPA guide Definitions of rachis noun axis of a compound leaf or compound inflorescence see more





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