Pronunciation: (en-sef"u-lī'tis), [key]
1. inflammation of the substance of the brain.
2. Also called encephali'tis le•thar'gi•ca Pronunciation: (li-thär'ji-ku). [key]a form of this condition, caused by a filterable virus and characterized by apathy and abnormal sleepiness; sleeping sickness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.