columella
/ˌkɒljʊˈmelə/noun
(pl. columellae /-liː/ )
1- Biology a structure resembling a small column, typically forming a central axis, in particular【生】小柱; 柱：
1.1
- Zoology the axis of a spiral shell【动】（螺的）轴柱; 壳轴。
1.2
- 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）。
1.3
- Anatomy the pillar around which the cochlea spirals【剖】蜗轴, 耳蜗的中轴。
1.4
- Botany the axis of the spore-producing body of some lower plants【植】囊轴; 蒴轴; 中柱; 基粒棒。
派生词
columellar
adjective词源
late 16th cent.: from Latin, 'small column'.