rachis

名词 n.
中文释义
英 /ˈɹeɪkɪs/    美 /ˈɹeɪkɪs/

英文释义

名词 n.
  1. The spinal column, or the vertebrae of the spine. obsolete
  2. An anatomical shaft or axis in a marine invertebrate.
    — In some squid species, the pen rachis flares out into wings on either side, and the tip of the rachis grows into a thick cone.
  3. The central shaft of a feather.
  4. The axis of either a compound leaf, inflorescence, or fern frond.

词形变化

rachises plural rachides plural rhachis alternative

词汇关系

衍生词
hyporachis rachi- rachidian rhachi- rhachidian

词源

From New Latin rachis, from Ancient Greek ῥάχις (rhákhis, “spine, ridge”).
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