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early 15c., castracioun, from Latin castrationem (nominative castratio), noun of action from past participle stem of castrare "to castrate, emasculate," supposedly from a noun *castrum "knife, instrument that cuts," from PIE root *kes- "to cut" (see caste). Freud's castration complex is attested from 1914 in English (translating German Kastrationsangst).
castration cas·tra·tion (kā-strā'shən)
Removal of the testicles or ovaries; sterilization.
A psychological disorder that is manifested in the female as the fantasized loss of the penis or in the male as fear of its actual loss.
castrate cas·trate (kās'trāt')
v. cas·trat·ed, cas·trat·ing, cas·trates
To remove the testicles of a male; emasculate.
To remove the ovaries of a female; spay.