#sterilisation__sterilization  the act of making an organism barren or infertile (unable to reproduce)
  supertype:  #surgical_operation__operation__surgery__surgical_procedure__surgical_process  a therapeutic procedure with instruments to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
  subtype:  #neutering__fixing__altering  the sterilization of an animal; "they took him to the vet for neutering"
     subtype:  #castration.neutering__emasculation  neutering a male animal by removing the testicles
     subtype:  #spaying  neutering a female by removing the ovaries
  subtype:  #surgical_contraception  contraception by surgical sterilization
     subtype:  #tubal_ligation__tuballigation  a sterilization procedure with women; both Fallopian tubes are tied in two places and the tubes removed in between the ligations
     subtype:  #vasectomy  surgical procedure that removes all or part of the vas deferens (usually as a means of sterilization); is sometimes reversible

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