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Elementary Dictionary
     

am·ne·sia

amnesia

 
 
pronunciation:
aem ni zh
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part of speech: noun
definition: When someone has amnesia, they have lost part or all of their memory. People sometimes get amnesia if they have an injury to the brain.
健忘症
The amnesia caused the man to forget what happened to him before the accident, but after some time, he remembered everything.
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Word Parts  About this feature
The word amnesia contains the following parts:
a-1, an-1 Greek prefix that means not, without
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Words prefixed with a-1, an-1 are nouns and adjectives. Some are loanwords from Greek (amorphous, atrophy). Others are English formations, which may attach the prefix to English words of Latin origin (asocial, amoral) or Greek origin (apolitical). The form a-1 is used before bases beginning with a consonant, while an-1 is used before bases beginning with a vowel.
mne, mnes, mnest Greek root that means memory
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synonyms:
memor, member, membr