Home › Words › T › tocolysistocolysistocolysis means the suppression of uterine contractions.Among words judged in Lexicurio's Arena, tocolysis ranks #10,166 of 42,762 for Qualifying.EtymologyFrom toco- + -lysis.nounThe suppression of uterine contractions.Definitions & examples from Wiktionary (CC BY-SA 3.0).