1. A medical operation that makes it impossible for a male or female to produce or have babies. English = sterilisation.
2. A medical operation that makes it impossible for a female to have or produce babies, for example by cutting or tying the fallopian tubes. English = tubal ligation.
3. A medical operation on a male in which the vas deferens in the testicles are excised so as to make it impossible for him to produce babies. English = vasectomy.