inflammation of the membranes covering the brain and spinal cord, typically caused by bacterial or viral infection

the outermost, toughest, and most fibrous of the three membranes covering the brain and spinal cord

the delicate innermost layer of the three membranes surrounding the brain and spinal cord

Acute infectious disease caused by meningococcal bacteria entering the brain via the respiratory tract; symptoms include high fever, severe headache, vomiting, stiff neck, and convulsions.