sivan Save DMLBS sivan [Heb.], third month of the Jewish calendar. tertius [Hebraeorum mensis] ~an Junio ‥ comparatur Bede TR 11; Heb' ~an ‥ Aegyp' Parni, Gr' Deseos, Lat' Jun', sax', litha vocatur Miss. R. Jum. 14.