Definitions for rachis

• Definition
• Anagrams (133)

rachis ra·chis

Spelling: [rey-kis]

IPA: /ˈreɪ kɪs/

Rachis is a 6 letter English word. It's valid Scrabble word worth 11 points. It's valid Words with friends word worth 11 points.

You can make 133 anagrams from letters in rachis (achirs).

Definitions for rachis

noun

1. Botany. the axis of an inflorescence when somewhat elongated, as in a raceme. (in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed. any of various axial structures.
2. Ornithology. the part of the shaft of a feather bearing the web.
3. Anatomy. spinal column.

Origin of rachis

1775-85; New Latin Greek rháchis spine, ridge, backbone

Examples for rachis

The ovicells arise from the back of the rachis towards the side.

Sporangia in oblong sori under a reflexed tooth of a pinnule; indusium broad; rachis dark and shining.

Ovicell pedunculate ovoid, adnate to the rachis, with a lateral opening.

The grass head was slowly rotated and shifted sideways until nothing remained but the rachis which was discarded.

Sori numerous, rather near the midvein, stipe and rachis lustrous brown.

The ovicells are placed in a single series on one side of the rachis, as in S. digitalis, but are widely different in form.

The stipes is somewhat longer than the rachis, and it is of a whity-green colour.

These commence to appear at the uppermost extremity of the rachis.

They are placed all on one side of the rachis, generally in single file, but sometimes in pairs.

They are attached to the rachis by a very short and slender stalk.