cephalitis n 1: inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) [syn: {encephalitis}, {cephalitis}, {phrenitis}]
Phrenitis \Phre*ni"tis\, n. [L., fr. Gr. freni^tis, fr. frh`n, freno`s.] 1. (Med.) Inflammation of the brain, or of the meninges of the brain, attended with acute fever and delirium; -- called also {cephalitis}. [1913 Webster] 2. See {Frenzy}. [1913 Webster]
Cephalitis \Ceph`a*li"tis\, n. [NL., fr. Gr. kefalh` head + -itis.] (Med.) Same as {Phrenitis}. [1913 Webster]