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.
Han's team hypothesized that certain emotions or behaviors could lead cortical neurons to activate the pons, which would then lower activity in the medulla, resulting in slower breath.
From Science Daily ● Nov. 19, 2024
For example, when the medulla is active, it initiates breathing.
From Science Daily ● Nov. 19, 2024
Each hair can have three layers – the medulla, the cortex and the cuticle.
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
Another part forms the medulla oblongata, that important hind brain in which lie so many of the vital centres of nervous energy.
From Embryology The Beginnings of Life by Gerald R. Leighton
Definitions 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.
