Entry 1 sense Webster, 1913 Hysterotomy · Hys·ter·ot·o·my · IPA 01 n. The act of cutting into the uterus, as in Cæsarean section. See under Cæsarean. 1. The act of cutting into the uterus, as in Cæsarean section. See under Cæsarean.(Med.) See: Cæsarean