De viris illustribus
The name "Sacramentarium" is equivalent to the other form also used (for instance, in the Gelasian book), "Liber Sacramentorum". The form is the same as that of the word "Hymnarium", for a book of hymns. Gennadius of Massilia (fifth cent.) says of Paulinus of Nola: "Fecit et sacramentarium et hymnarium" (De viris illustribus, XLVIII). The word "sacramentum" or "sacramenta" in this case means the Mass. "Sacramenta celebrare" or "facere" is a common term for saying Mass.