Meaning of Wernicke's aphasia

Wer'nick•e's apha'sia

Pronunciation: (vâr'ni-kēz, -kuz), [key]
— Pathol. Pathol.
  1. a type of aphasia caused by a lesion in Wernicke's area of the brain and characterized by grammatical but more or less meaningless speech and an apparent inability to comprehend speech.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.