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: MÜ Mä Mæ Mé Mê Mö Mœ M- M. M1 M2 M3 M< Ma Mb Mc Md Me Mf Mg Mh Mi Mk Ml Mm Mn Mo Mp Mr Ms Mt Mu Mv Mw Mx My

Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

medulla

POS

Noun

HYPHEN

me=dul=la

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WORDNET DICTIONARY

Noun medulla has 3 senses

medulla(n = noun.substance) myelin, myeline - a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers; Array

is a kind of fat

medulla(n = noun.body) bulb, medulla oblongata - 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"

is a kind of neural structure

is a part of brain-stem, brain stem, brainstem

has parts: respiratory center

Derived form adjective medullary₂

medulla(n = noun.body) Array - the inner part of an organ or structure in plant or animal; Array

is a kind of

animal tissue

plant tissue

has particulars: adrenal medulla

Antonym: cortex

Derived form adjective medullary₃

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CIDE DICTIONARY

medulla, n. [L.].

Marrow; pith; hence, essence. Milton. [1913 Webster]
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. [1913 Webster]
A soft tissue, occupying the center of the stem or branch of a plant; pith. [1913 Webster]
See medulla oblongata. [PJC]

∥Medulla oblongata. [L., oblong medulla] (Anat.), the posterior part of the brain connected with the spinal cord. It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. It controls very largely respiration, circulation, swallowing, and other functions, and is the most vital part of the brain; -- called also bulb of the spinal cord. See Brain.

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OXFORD DICTIONARY

medulla, n.
1 the inner region of certain organs or tissues usu. when it is distinguishable from the outer region or cortex, as in hair or a kidney.
2 the myelin layer of certain nerve fibres.
3 the soft internal tissue of plants.

Idiom

medulla oblongata the continuation of the spinal cord within the skull, forming the lowest part of the brain stem.

Derivative

medullary adj.

Etymology

L, = pith, marrow, prob. rel. to medius middle

For further exploring for "medulla" in Webster Dictionary Online