noun
meninges; meninx; membranous coverings
Anatomical term for the three membranes covering the brain and spinal cord. Often used in medical contexts; related terms include 硬膜 (dura mater), くも膜 (arachnoid mater), and 軟膜 (pia mater).
髄膜炎は髄膜の炎症です。
Meningitis is inflammation of the meninges.
The kanji 髄 (marrow) and 膜 (membrane) combine to mean 'membranes surrounding the marrow (brain/spinal cord)'. The reading is on'yomi.