rachis

Valid in Scrabble

Scrabble points
11
Words With Friends
11
Letters
6
Pronunciation
/ˈɹeɪkɪs/(UK)

Definition of rachis

4 senses · 1 part of speech · etymology included

noun

  1. (obsolete)The spinal column, or the vertebrae of the spine.
See all 4 definitions

noun

  1. (obsolete)The spinal column, or the vertebrae of the spine.
  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.

Definitions from Wiktionary, CC BY-SA.

Etymology

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

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