Excerebration is a rare and complex word that refers to the complete removal or destruction of the brain. The phonetic transcription of this word is /ɛksɪˌsɛrəˈbreɪʃən/ and breaks down as follows: the first syllable is pronounced like "ex," the second syllable sounds like "siss," the third syllable is similar to "ra," the fourth syllable is pronounced like "bray," and the final syllable is like "shun." Despite its difficulty, excerebration is sometimes used in medical or scientific contexts to describe extreme cases of brain damage or pathology.
Removal of the brain in the operation of embryotomy.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.