rachis

名词 rachis:

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
   同义词：spinal column, vertebral column, spine, backbone, back

ra.chis

n.（名词）
【复数】 ra.chis.es 或 rach.i.des [r2k.-dôz., r3.k-] 【生物学】
A main axis or shaft, such as the main stem of an inflorescence, the stalk of a pinnately compound leaf, or the spinal column.
花序轴：主轴或主茎，如花序的总轴、掌状复叶的茎或螺旋状的柱

来源：
New Latin
现代拉丁语
from Greek rhakhis [spine, ridge]
源自 希腊语 rhakhis [脊柱，山脊]

【引伸】
ra.chial
adj.（形容词）