Dictionary.com

rachis

or rha路chis

[ rey-kis ]
/ 藞re瑟 k瑟s /
Save This Word!

noun, plural ra路chis路es, rach路i路des [rak-i-deez, rey-ki-]. /藞r忙k 瑟藢diz, 藞re瑟 k瑟-/.
Botany.
  1. the axis of an inflorescence when somewhat elongated, as in a raceme.
  2. (in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed.
  3. any of various axial structures.
Ornithology. the part of the shaft of a feather bearing the web.
Anatomy. spinal column.
QUIZ
TAKE JOY IN ACING THIS QUIZ ON 鈥淧RIDE鈥 SYNONYMS
Hold your head up high as you embark on this quiz that explores some of the synonyms and meanings of 鈥減ride.鈥
Question 1 of 7
What does "dignity" mean?

Origin of rachis

1775鈥85; <New Latin <Greek rh谩chis spine, ridge, backbone

OTHER WORDS FROM rachis

ra路chid路i路an [ruh-kid-ee-uhn], /r蓹藞k瑟d i 蓹n/, ra路chi路al [rey-kee-uhl], /藞re瑟 ki 蓹l/, ra路chid路i路al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2022

How to use rachis in a sentence

British Dictionary definitions for rachis

rachis

rhachis

/ (藞re瑟k瑟s) /

noun plural rachises, rhachises, rachides or rhachides (藞r忙k瑟藢di藧z, 藞re瑟-)
botany the main axis or stem of an inflorescence or compound leaf
ornithol the shaft of a feather, esp the part that carries the barbs
another name for spinal column

Derived forms of rachis

rachial or rhachial (藞re瑟k瑟蓹l) or rachidial or rhachidial (r蓹藞k瑟d瑟蓹l), adjective

Word Origin for rachis

C17: via New Latin from Greek rhakhis ridge
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for rachis

rachis
[ r膩k沫s ]

n. pl. ra鈥his鈥s
spinal column
The American Heritage庐 Stedman's Medical Dictionary Copyright 漏 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for rachis

rachis
[ r膩k沫s ]

Plural rachises rachides (r膬k沫-d膿z鈥, r膩k沫-)
A main axis or shaft, such as the main stem of an inflorescence, the stalk of a pinnately compound leaf, the shaft of a feather, or the spinal column.
The American Heritage庐 Science Dictionary Copyright 漏 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK