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.]
amnesiac am·ne'si·ac' (-nē'zē-ăk', -zhē-ăk') or am·ne'sic (-zĭk, -sĭk) n. & adj.amnestic am·nes'tic (-nĕs'tĭk) adj.
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