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

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