rachis
/ˈɹeɪkɪs/
rachis noun: the spinal column, or the vertebrae of the spine.
Noun
rachis (plural rachises or rachides)
- The spinal column, or the vertebrae of the spine.
- 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.2017, Danna Staaf, Squid Empire, ForeEdge, →ISBN, page 115
- The central shaft of a feather.
- The axis of either a compound leaf, inflorescence, or fern frond.
rachis meaning in Tamil
rachis in Tamil
- காம்பு, சிறைமேற்றண்டு, முதுகெலும்புத்தண்டு, இறக்கைமேற்றண்டு, கிளை, இறக்கைக்கீழ்த்தண்டு
Forms of rachis
| plural | rachises |
|---|---|
| plural | rachides |
| alternative form | rhachis |
Origin of rachis
From New Latin rhachis/rachis, from Ancient Greek ῥάχις (rhákhis, “spine, ridge”).
Words formed from rachis
Questions about rachis
- What does rachis mean?
- Rachis means the spinal column, or the vertebrae of the spine.
- What is rachis in Tamil?
- Rachis in Tamil is காம்பு, சிறைமேற்றண்டு, முதுகெலும்புத்தண்டு. See Rachis meaning in Tamil.
- What part of speech is rachis?
- Rachis is a noun.
- How do you pronounce rachis?
- Rachis is pronounced /ˈɹeɪkɪs/ (UK).
- What is the plural of rachis?
- The plural of rachis is rachises.
Words near rachis in the dictionary
Source and license
Adapted from Wiktionary: rachis (page history and authors); rachis (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-rachis.wav.
Cite this entry: “rachis.” Word.ws, https://word.ws/rachis. Based on Wiktionary, CC BY-SA 4.0.