columella

columella
[ˌkɒljʊˈmɛlə]
(pl. columellae -liː)
  1. (Botany)a structure resembling a small column, typically forming a central axis, in particular
    (生)小柱;柱
    ■(Zoology)the axis of a spiral shell
    (动)(螺的)轴柱;壳轴
    ■(Zoology)an ossicle of the middle ear of birds, reptiles, and amphibians
    (动)耳柱骨(鸟类、爬虫类和两栖类中耳的小骨)
    ■(Anatomy)the pillar around which the cochlea spirals
    (剖)蜗轴,耳蜗的中轴
    ■(Botany)the axis of the spore-producing body of some lower plants
    (植)囊轴;蒴轴;中柱;基粒棒
派生
columellar
adjective
语源
  1. late 16th cent.: from Latin, small column'
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