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Definition of Leptomeninges
1. Noun. The two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layers.
Definition of Leptomeninges
1. Noun. (anatomy) The innermost layers of the meninges; the pia mater and the arachnoid ¹
¹ Source: wiktionary.com
Medical Definition of Leptomeninges
1. The two delicate layers of the meninges, the arachnoid mater and pia mater (vs. The tough pachymeninx or dura mater), considered together; by this concept, the arachnoid and pia are two parts of a single layer, much like the parietal and visceral layers of a serous membrane or bursa; although separated by the subarachnoid space they are connected via the arachnoid trabeculae and become continuous where the nerves and filum terminale exit the subarachnoid space (the cerebrospinal fluid-filled space bounded by the leptomeninges). See: arachnoid, pia mater. Synonym: meninx tenuis, pia-arachnoid, piarachnoid. Origin: Lepto-+ G. Meninx, pl. Meninges, membrane (05 Mar 2000)
Lexicographical Neighbors of Leptomeninges
Literary usage of Leptomeninges
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Journal of Comparative Pathology and Therapeutics (1888)
"... continuity between the neoplastic tissue of the leptomeninges and underlying
brain. Azure - eosin, .< 24. Fig. 3. Medulla oblongata. ..."
2. Edinburgh Medical Journal (1895)
"The spinal cord showed marked congestion of the leptomeninges. ... leptomeninges.—The
pia arachnoid on the anterior and lateral aspects of the medulla and ..."
3. The Oxford Medicine by Henry Asbury Christian, James Mackenzie (1920)
"Minute hemorrhages of the leptomeninges of the cerebrum were observed twice.
In one brain, small areas of softening in the lenticular nuclei were found. ..."
4. Surgery, Gynecology & Obstetrics by The American College of Surgeons, Franklin H. Martin Memorial Foundation (1922)
"... and the other a hair-containing, or dermal cholesteatoma,3 both of them arising
from the leptomeninges. It is important to bear in mind, therefore, ..."
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