I.the thousandth (class.): “millesimam partem vix intellego,” Cic. Att. 2, 4, 1; cf.: “in millesimo corpore,” Cels. 2, 6: “inter mille rates tua sit millesima puppis, i. e. ultima, Ov H. 13, 97: usura,” one for every thousand monthly, Sen. Ira, 3, 33: “pagina,” Juv. 7, 100. —In plur.: “armillam, ex millesimis Mercurii factam,” the thousandth part of gain vowed to Mercury, Petr. 67, 7.—Hence, adv.: millēsĭmum , for the thousandth time: “Q pater quartum vel potius millesimum nihii sapit,” Cic. Att. 12, 5, 1.
millēsĭmus (-lensimus ), a, um, adj. mille,