Definition of Dysphasia

Dysphasia: One in a group of speech disorders in which there is impairment of the power of expression by speech, writing, or signs, or impairment of the power of comprehension of spoken or written language. More severe forms of dysphasia are called aphasia.

From dys- meaning difficult, painful, bad, disordered, abnormal + the Greek phasis meaning speech.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=31169
Last Editorial Review: 6/14/2012