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Definition of lobotomy


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lo·bot·o·my  audio  (l-bt-m, l-) KEY  

NOUN:
pl. lo·bot·o·mies
Surgical incision into the frontal lobe of the brain to sever one or more nerve tracts, a technique formerly used to treat certain mental disorders but now rarely performed.

ETYMOLOGY:
lobe + -tomy


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The American Heritage® Dictionary of the English Language, Fourth Edition.
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