rachis
rachis · rachises · rachides
An anatomical shaft or axis in a marine invertebrateAn anatomical shaft or axis in a marine invertebrate.
/ˈɹeɪkɪs/
Meaning
4 sensesAn anatomical shaft or axis in a marine invertebrate.
The central shaft of a feather.
The axis of either a compound leaf, inflorescence, or fern frond.
axis of a compound leaf or compound inflorescence
(obsolete)The spinal column, or the vertebrae of the spine.
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
Translations
3 languagesOrigin
From New Latin rhachis/rachis, from Ancient Greek ῥάχις (rhákhis, “spine, ridge”).From New Latin rhachis/rachis, from Ancient Greek ῥάχις (rhákhis, “spine, ridge”).
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: rachises / rachidesSynonyms
5 synonymsClose in meaning
- the series of vertebrae forming the axis of the skeleton and protecting the spinal cord:spinal columnvertebral columnspinebackboneback