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Wiktionary
meningoencephalitis

n. (context pathology English) inflammation of the brain and the meninges

WordNet
meningoencephalitis

n. inflammation of the brain and spinal cord and their meninges [syn: cerebromeningitis, encephalomeningitis]

Wikipedia
Meningoencephalitis

Meningoencephalitis (; from Greek: meninges- membranes; enkephalos brain; and -itis inflammation) is a medical condition that simultaneously resembles both meningitis, which is an infection or inflammation of the meninges, and encephalitis, which is an infection or inflammation of the brain.