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Medullary   Listen
adjective
Medullary  adj.  
1.
(Anat.)
(a)
Pertaining to, consisting of, or resembling, marrow or medulla.
(b)
Pertaining to the medula oblongata.
2.
(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.






Collaborative International Dictionary of English 0.48








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"Medullary" Quotes from Famous Books



... see first the outer portion, like the bark of a tree, consisting of a dense sheath of flattened scales, then comes an inner lining of closely-packed fibrous cells, and frequently an inner well-marked central bundle of larger and rounder cells, forming a medullary axis. The transverse section (Fig. 7) shows this exceedingly well. The end of a hair is generally pointed, sometimes filamentous. The lower extremity is larger than the shaft, and terminates in a conical bulb, or mass of cells, which forms the root of the hair. ...
— The Chemistry of Hat Manufacturing - Lectures Delivered Before the Hat Manufacturers' Association • Watson Smith

... tractable; malleable, extensile, sequacious^, inelastic; aluminous^; remollient^. yielding &c v.; flabby, limp, flimsy. doughy, spongy, penetrable, foamy, cushiony^. flaccid, flocculent, downy; edematous, oedematous^, medullary [Anat.], argillaceous, mellow. soft as butter, soft as down, soft as silk; yielding ...
— Roget's Thesaurus of English Words and Phrases: Body • Roget

... ductile; tractile[obs3], tractable; malleable, extensile, sequacious[obs3], inelastic; aluminous[obs3]; remollient[obs3]. yielding &c. v.; flabby, limp, flimsy. doughy, spongy, penetrable, foamy, cushiony[obs3].' flaccid, flocculent, downy; edematous, oedematous[obs3], medullary[Anat], argillaceous, mellow. soft as butter, soft as down, soft as silk; yielding as wax, ...
— Roget's Thesaurus

... silver grain, or cut "quartering" as it is called by the lumbermen, the surface shows this cellular material spread out in strange blotches characteristic of the different kinds of wood. Fig. 16 shows an Oak where the blotches of medullary rays are large. In the Beech the blotches are smaller; in the Elm quite small. Lumber cut carefully in this way is said to be "quartered," and with most species its beauty is ...
— Trees of the Northern United States - Their Study, Description and Determination • Austin C. Apgar

... Similar varieties of osteomyelitis are met with that do not, like the acute forms, go on to suppuration or to death of bone, but result in thickening of the bone affected, both on the surface and in the interior, resulting in obliteration of the medullary canal. ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles

... that some of these gigantic lycopods, which are classed with the CRYPTOGAMS, or flowerless plants, had pith and medullary rays dividing their cylinders into woody wedges. These characters connect them with the PHANEROGAMS, or flowering plants. Like so many of the organisms of the remote past, they were connecting types from which groups now widely separated ...
— The Elements of Geology • William Harmon Norton



Words linked to "Medullary" :   marrow, medullary ray



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