rachis

Fetched 2026-10-26 (cache).

Synonyms: rhachis, arachis, raphis, rachid, hachis, rachi, rachi-, rachio, raches, rachie, trachis

Antonyms: rhachis, arachis, raphis, rachid, hachis, rachi, rachi-, rachio, raches, rachie, trachis

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|obsolete|zoology|anatomy}} The [[spinal column]], or the [[vertebrae]] of the spine. {{defdate|17th|19th c.}}
2. {{lb|en|zoology}} An anatomical [[shaft]] or [[axis]] in a marine [[invertebrate]]. {{defdate|from 18th c.}}
3. {{lb|en|ornithology}} The [[central]] shaft of a [[feather]]. {{defdate|from 19th c.}}
4. {{lb|en|botany}} The axis of either a [[compound]] [[leaf]], [[inflorescence]], or fern [[frond]]. {{defdate|from 19th c.}}

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.