encephalasthenia: Meaning and Definition of

en•ceph•a•las•the•ni•a

Pronunciation: (en-sef"u-lus-thē'nē-u), [key]
— n. Pathol.
  1. mental fatigue caused by emotional stress.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.