#ligation  tying a duct or blood vessel with a ligature (as in surgery to prevent bleeding)
  supertype:  #tying  the act of tying things together
  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

No statement uses or specializes #ligation; click here to add one.