judicatum solvi stipulatio [Roman Law.] A stipulation whereby a plaintiff took security at the beginning of a suit for satisfaction of the judgment. (1) Before Justinian. In a real action commenced by formula petitoria the defendant was required to give the cautio judicatum solvi-a security with sureties. In a personal action , the defendent sued in his own name did notgive security. (2) Under Justinian. The defendant if sued in his own name was required to give security that he would appear personally and remain in court to the end of the trail.