MEDULLARY • FREE TRANSLATOR.ORG • Definition of Medullary

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adjective

Medullary adj.

(Anat.)

(a)

Pertaining to, consisting of, or resembling, marrow or medulla.

(b)

Pertaining to the medula oblongata.

(Bot.) Filled with spongy pith; pithy.

Medullary groove (Anat.), a groove, in the epiblast of the vertebrate blastoderm, the edges of which unite, making a tube (the medullary canal) from which the brain and spinal cord are developed.

Medullary rays (Bot.), the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark.

Medullary sheath (Anat.), the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber.

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Etymology of 'Medullary'

Collaborative International Dictionary of English 0.48

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"Medullary" Quotes from Famous Books

... "The medullary tissue" (first time of using this fine phrase for the marrow,—why can't he say marrowy tissue—'tissue moelleuse'?) "appears very early struck with atony," ('atonic,' want of tone,) "above all, in its central parts." And so ends all he has to say for the present about ...

— Proserpina, Volume 2 - Studies Of Wayside Flowers • John Ruskin

... which represent a portion of the fibrous region of Calamodendron wood, may give an idea of the shrinkage that has taken place therein. In Figs. 11 and 12, which show a few tracheae and medullary rays of the ligneous bands of the same plant, we observe the same phenomenon. We might cite a large number of analogous examples, but shall be content to give the following: Figs. 13 and 15 represent radial and tangential ...

— Scientific American Supplement, No. 481, March 21, 1885 • Various

... latter, some are apparently formed of wood and others of leaves: one layer on the N.W. side of Lemuy is nearly two feet in thickness. There is also much silicified wood, both common dicotyledonous and coniferous: a section of one specimen in the direction of the medullary rays has, as I am informed by Mr. R. Brown, the discs in a double row placed alternately, and not opposite as in the true Araucaria. I found marine remains only in one spot, in some concretions of hard calcareous sandstone: ...

— South American Geology - also: - Title: Geological Observations On South America • Charles Darwin

... OR SMALL PASTERN BONE.—This belongs to the class of small bones, in that it possesses no medullary canal. It is situated obliquely in the digit, running from above downwards and from behind to before, and articulating superiorly with the first phalanx or os suffraginis, and inferiorly with the third phalanx ...

— Diseases of the Horse's Foot • Harry Caulton Reeks

Words linked to "Medullary" : medullary ray, medulla, marrow, medullary sheath