• WordNet 3.6
    • n radicle (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve)
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Webster's Revised Unabridged Dictionary
    • n Radicle răd"ĭ*k'l (Bot) The rudimentary stem of a plant which supports the cotyledons in the seed, and from which the root is developed downward; the stem of the embryo; the caulicle.
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Century Dictionary and Cyclopedia
    • n radicle In botany:
    • n radicle A rootlet: same as radicel.
    • n radicle Specifically, same as caulicle: by late writers appropriately restricted to the rudimentary root at the lower extremity of the caulicle.
    • n radicle In anatomy and zoology, a little root or root-like part; a radix: as, the radicles of a vein (the minute vessels which unite to form a vein); the radicle of a nerve.
    • n radicle In philology, same as radical, 1.
    • n radicle In chem., same as radical, 2.
    • n radicle In the graptolites, the proximal extension of the virgula.
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Chambers's Twentieth Century Dictionary
    • n Radicle a little root: the part of a seed which in growing becomes the root
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Webster's Revised Unabridged Dictionary
L. radicula, dim. of radix, -icis, root: cf. F. radicule,. See Radix
Chambers's Twentieth Century Dictionary
L. radicāri, -ātus, to take root—radix, a root.


In literature:

The soil, it appears, is suited to the seed, for it has sent its radicle downward, and it may now send its shoot upward also with confidence.
"Walden, and On The Duty Of Civil Disobedience" by Henry David Thoreau
The tip of the radicle is a kind of brain to the whole growing part of the radicle!
"More Letters of Charles Darwin Volume II" by Charles Darwin
Is there any radicle of such legislation in our parliamentary system?
"Bernard Shaw's Preface to Major Barbara" by George Bernard Shaw
And, lastly, that at the apex of the nucleus the radicle of the future Embryo would constantly be found.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
Radicle very short, very near the umbilicus centripetal.
"The Commercial Products of the Vegetable Kingdom" by P. L. Simmonds
The pebbles, though they contain the same chemical elements, do not become active and put out a radicle.
"The Breath of Life" by John Burroughs
Radicle or Radicula: that joint of the antenna that is articulated to the head.
"Explanation of Terms Used in Entomology" by John. B. Smith
The sheath which envelopes the radicle is called =coleorhiza= and that of the plumule, =pileole= or =germ-sheath=.
"A Handbook of Some South Indian Grasses" by Rai Bahadur K. Ranga Achariyar
Watery drinks are absorbed in the stomach and intestines, by the radicles of the vena portae.
"North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826" by Various
The envelope breaks, the little plant makes its appearance; radicle and stalk come to light.
"The Industries of Animals" by Frédéric Houssay
The initial stem on which they stand was called the RADICLE.
"The Elements of Botany" by Asa Gray
The alkalies may be regarded as water in which part of the hydrogen is replaced by a metallic radicle.
"The New Gresham Encyclopedia. Vol. 1 Part 1" by Various
These ions are chemical radicles carrying a definite electric charge.
"The New Gresham Encyclopedia" by Various
It has been already stated that the radicle of the embryo is directed to the micropyle, and the cotyledons to the chalaza.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3" by Various
In the early or mild forms, it consists of congestion in the veins or venous radicles, and effusions into the cellular tissue.
"The American Reformed Cattle Doctor" by George Dadd
The reader will not fail to observe how essentially atomic is this conception of compound radicle.
"Heroes of Science" by M. M. Pattison Muir
The radicles did not present the appearance of having been subjected to a sufficient pressure to account for their curvature.
"A Review of the Systems of Ethics Founded on the Theory of Evolution" by C. M. Williams
Embryo abruptly bent; the radicle pointing upward.
"The Manual of the Botany of the Northern United States" by Asa Gray
In the course of two or three days, the radicle curves towards its support, and, as soon as it reaches it, becomes dilated and flattened.
"Omphalos" by Philip Henry Gosse
During this period they sprout and develop small radicles.
"Scurvy Past and Present" by Alfred Fabian Hess

In news:

It acts as a pipeline for water and nutrients between the radicle and seminal root system and the growing point of the developing seedlings .