from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Partial or total loss of the ability to articulate ideas or comprehend spoken or written language, resulting from damage to the brain caused by injury or disease.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A partial or total loss of language skills due to brain damage. Usually, damage to the left perisylvian region, including Broca's area and Wernike's area, causes aphasia.
from the GNU version of the Collaborative International Dictionary of English
- n. Loss of the power of speech, or of the appropriate use of words, the vocal organs remaining intact, and the intelligence being preserved. It is dependent on injury or disease of the brain.
from The Century Dictionary and Cyclopedia
- n. In pathology, the impairment or abolition of the faculty of using and understanding written and spoken language, independently of any failure of the intellectual processes or any disease or paralysis of the vocal organs.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. inability to use or understand language (spoken or written) because of a brain lesion
Greek, from aphatos, speechless : a-, not; see a-1 + phatos, spoken, speakable (from phanai, to speak; see -phasia).(American Heritage® Dictionary of the English Language, Fourth Edition)
Modern Latin, from Ancient Greek ἀφασία, from ἄφατος ("speechless"), from ἀ- ("a-") + φάσις ("speech"). (Wiktionary)