Definition of Leptomeninges

1. Noun. The two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layers.

Generic synonyms: Meninges, Meninx
Terms within: Arachnoid, Arachnoid Membrane, Pia Mater

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

Leptodactylidae
leptodactylid frog
leptodactylous
Leptodactylus
Leptodactylus pentadactylus
leptodermic
Leptoglossus
leptology
leptome
leptomeningeal
leptomeningeal carcinoma
leptomeningeal carcinomatosis
leptomeningeal cyst
leptomeningeal fibrosis
leptomeninges (current term)
leptomeninges (current term)
leptomeningitis
leptomeningitis
leptomere
leptomes
leptomonad
Leptomonas
lepton
leptonema
leptonic
leptons
leptophonia
leptophonic
leptophos
leptophos

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