medulla

American  

[muh-duhl-uh] / məˈdʌl ə /

noun

• medullas,
  plural
• medullae
  plural

1. Anatomy.

   1. the marrow of the bones.

   2. the soft, marrowlike center of an organ, as the kidney or adrenal gland.

   3. medulla oblongata.

2. Botany. the pith of plants.

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medulla British  

/ mɪˈdʌlə /

noun

1. anatomy

   1. the innermost part of an organ or structure

   2. short for medulla oblongata

2. botany another name for pith

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medulla Scientific  

/ mĭ-dŭl′ə,mĭ-do̅o̅′lə /

• medullas
  plural

1. See medulla oblongata

2. The central portion of an anatomical structure, such as the adrenal gland or the kidney.

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Other Word Forms

Derived Forms

• medullary
  adjective

Inflected Forms

Nouns

• medullae
  plural
• medullas
  plural

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Etymology

Origin of medulla

1635–45; < Latin: marrow, pith

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Example Sentences

See Examples For:

medulla

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

At the same time, the concentration of the mind on this subject sometimes produces even structural changes in the medulla, and the reflex susceptibility in co-ordination with the other symptoms may be almost perfect.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various

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