Dictionary

rachis en · NOUN

Pronunciation

• (Southern-England) audio
• /ˈɹeɪkɪs/ (UK, US)

Etymology

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

Meanings

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. 2017, Danna Staaf, Squid Empire, ForeEdge, →ISBN, page 115:
3. The central shaft of a feather.
4. The axis of either a compound leaf, inflorescence, or fern frond.

Forms

Deriveds

hyporachis · rachi- · rhachi- · rhachidian · rachidian

Translations (19)

ro rahis (central shaft of a feather) · es raquis (main shaft of a compound leaf or inflorescence) · ca raquis (main shaft of a compound leaf or inflorescence) · eo rakio (spinal column — see also spinal column) · fi ruoto (central shaft of a feather) · ca raquis (spinal column — see also spinal column) · pt raque (central shaft of a feather) · bg стъбло (central shaft of a feather) · bg гръбнак (spinal column — see also spinal column) · gl raque (main shaft of a compound leaf or inflorescence) · fi ruoti (central shaft of a feather) · ro rahis (main shaft of a compound leaf or inflorescence) · es raquis (spinal column — see also spinal column) · fi keskiranka (main shaft of a compound leaf or inflorescence) · ro rahis (spinal column — see also spinal column) · ca raquis (central shaft of a feather) · fi lapakko (main shaft of a compound leaf or inflorescence) · es raquis (central shaft of a feather) · pl stosina (central shaft of a feather)