Partial or total loss of the ability to articulate ideas or comprehend spoken or written language, resulting from damage to the brain from injury or disease.
[Greek, from aphatos, speechless : a-, not; see A-1 + phatos, spoken, speakable (from phanai, to speak; see -PHASIA).]
a·phasi·ac′ (-zē-ăk′) n.
a·phasic (-zĭk, -sĭk) adj. & n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.