medulla
Americannoun
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medullas,
plural
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medullae
plural
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Anatomy.
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the marrow of the bones.
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the soft, marrowlike center of an organ, as the kidney or adrenal gland.
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Botany. the pith of plants.
noun
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anatomy
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the innermost part of an organ or structure
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short for medulla oblongata
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botany another name for pith
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medullas
plural
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The central portion of an anatomical structure, such as the adrenal gland or the kidney.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of medulla
1635–45; < Latin: marrow, pith
Vocabulary lists containing medulla
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
However, messages coming down from the pons actually inhibit activity in the medulla, leading breathing rates to slow down.
From Science Daily ● Nov. 19, 2024
For example, when the medulla is active, it initiates breathing.
From Science Daily ● Nov. 19, 2024
This layer is also very fragile, but only thick or coarse hairs contain this part – so those with thin or blond hair typically don’t have the medulla layer in their hairs.
From Scientific American ● Aug. 16, 2023
The library nearly resembles the shape of a brain, with the entrance being the medulla oblongata and the robust flooring as the cerebellum.
From Los Angeles Times ● Jan. 6, 2023
This consists of the sensitive nerves, which are distributed to all parts of the animal economy endowed with feeling; and all external impulses are reflected to the medulla oblongata, &c.
From The American Reformed Cattle Doctor by George Dadd
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
