Word salad refer to unconnected words and word sounds. This feature of Wernicke's Aphasia is a deficit in placing words together in proper grammatical and syntactical form. This condition is more formally known as Paragrammatism or Extended Paraphasia, and it is characterized by running speech that is logically incoherent, often sounding like an exotic foreign language.

Other /More definition:
word salad refers to speech that is so disorganized that a listener cannot comprehend it