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amnesiac

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am⋅ne⋅si⋅ac

[am-nee-zhee-ak, -zee-]
–noun
1. a person affected by amnesia.
–adjective
2. Also, am⋅ne⋅sic [am-nee-sik, -zik] . displaying the symptoms of amnesia.

Origin:
1910–15; amnesi(a) + -ac, after such pairs as mania, maniac
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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am·ne·sia   (ām-nē'zhə)   
n.  Partial or total loss of memory, usually resulting from shock, psychological disturbance, brain injury, or illness.

[Greek amnēsiā, forgetfulness, probably from amnēstiā, from amnēstos, not remembered : a-, not; see a-1 + mimnēskein, mnē-, to remember; see men-1 in Indo-European roots.]
am·ne'si·ac' (-nē'zē-āk', -zhē-āk'), am·ne'sic (-zĭk, -sĭk) n. & adj., am·nes'tic (-něs'tĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: am·ne·si·ac
Pronunciation: -z(h)E-"ak
Variant: also am·ne·sic /-zik, -sik/
Function:noun
: a person affected with amnesia
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

amnesiac am·ne·si·ac (ām-nē'zē-āk', -zhē-āk')
n.
One who is afflicted with amnesia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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