• WordNet 3.6
    • n medulla the inner part of an organ or structure in plant or animal
    • n medulla lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata) "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
    • n medulla a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
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Webster's Revised Unabridged Dictionary
    • Medulla (Bot) A soft tissue, occupying the center of the stem or branch of a plant; pith.
    • Medulla Marrow; pith; hence, essence.
    • Medulla See medulla oblongata.
    • Medulla (Anat) The marrow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.
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Century Dictionary and Cyclopedia
    • n medulla In anatomy and zoology: Marrow. [Little used.]
    • n medulla The so-called spinal marrow; the spinal cord, or central axis of the nervous system; the myelon: more fully called medulla spinalis.
    • n medulla The hindmost segment of the brain, continuous with the spinal cord; the afterbrain or metencephalon; the oblongata: more fully called medulla oblongata.
    • n medulla The ventral ganglionic chain of the nervous system of some invertebrates, as Vermes, supposed to be analogous to the spinal cord of vertebrates.
    • n medulla The pith of a hair.
    • n medulla The myelin, or white and fatty covering of the axis-cylinder of a nerve.
    • n medulla In botany, the pith of plants. In exogens, the central column of parenchymatous tissue about which the wood is formed.
    • n medulla The semi-fluid endosarc of a protozoön.
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Chambers's Twentieth Century Dictionary
    • n Medulla me-dul′a the inner portion of an organ or part, as the pith of a hair, spinal cord, or its continuation within the cranium, (medulla oblongata): the pith of a plant, the thallus in lichens, &c
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Webster's Revised Unabridged Dictionary
Chambers's Twentieth Century Dictionary
L. medulla, marrow.


In literature:

The toxins interfere with the nerve-centres in the medulla that regulate the balance between the production and the loss of body heat.
"Manual of Surgery" by Alexis Thomson and Alexander Miles
The shaft consists of a center, or medulla, a surrounding fibrous portion, and an external coating, or cortex.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
On the Reflex Functions of the Medulla Oblongata and the Medulla Spinalis, in Phil.
"A History of Science, Volume 5(of 5)" by Henry Smith Williams
Describe the medulla oblongata.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
I had seen men living with pistol balls imbedded in the medulla oblongata.
"Stories by American Authors, Volume 10" by Various
I am Percival Medulla, and this is Mrs. Medulla.
"Bee and Butterfly" by Lucy Foster Madison
In the medulla oblongata?
"A Treatise on Physiology and Hygiene" by Joseph Chrisman Hutchison
But Toro showed "mucho fuego" before he was so neatly pierced in the medulla.
"Romantic Spain" by John Augustus O'Shea
Some little congestion of the medulla and pons.
"The Man from Archangel" by A. Conan Doyle
The drug kills by its action on the respiratory centre in the medulla oblongata.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various

In poetry:

They played him a sonata - let me see!
Then they began to sing
That extremely lovely thing,
"The Story of Prince Agib" by William Schwenck Gilbert
Labitur totas furor in medullas,
Igne furtivo populante venas,
Nec habet latum data plaga frontem;
Sed vorat tectas penitas medullas,
Virginum ignoto ferit igne pectus.
"The Heroic Enthusiasts - Part The Second =First Dialogue.=" by Giordano Bruno

In news:

Specifically, I would like to know about a recent MRI scan that showed I have atrophy in the medulla and thinning in the spinal cord above my spinal cord injury.
"With a palm full of stars," Bjork muses on her latest album, Medulla, "I shake them like dice and throw them on the table repeatedly, repeatedly, until the desired constellation appears".