- the lower part of the axis of an embryo; the primary root.
- a rudimentary root; radicel or rootlet.
- Chemistry. (formerly) radical(def 13).
- Anatomy. a small rootlike part or structure, as the beginning of a nerve or vein.
Origin of radicle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for radicle
Radicle or Radicula: that joint of the antenna that is articulated to the head.Explanation of Terms Used in Entomology
John. B. Smith
Give the etymologies of the words icicle, radicle, and radical.
The -icle, in icicle, is apparently the same as the -icle in radicle.
The radicle is blunt and is about 3⁄4 mm in length, while the cotyledons are 1⁄2 mm long.All About Coffee
William H. Ukers
The initial stem on which they stand was called the Radicle.The Elements of Botany
- part of the embryo of seed-bearing plants that develops into the main root
- a very small root or rootlike part
- anatomy any bodily structure resembling a rootlet, esp one of the smallest branches of a vein or nerve
- chem a variant spelling of radical (def. 11)
C18: from Latin rādīcula a little root, from rādīx root
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for radicle
1670s, in botany, from Latin radicula, diminutive of radix (see radish).
Online Etymology Dictionary, © 2010 Douglas Harper
- A small structure, such as a fibril of a nerve, that resembles a root.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The part of a plant embryo that develops into a root. In most seeds, the radicle is the first structure to emerge on germination.
- A small anatomical structure, such as a fibril of a nerve, that resembles a root.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.