MASS Copy link • MASSMatter, massa (general term). Great quantity, sum, summa (contents): vis, copia (quantity): multitudo (number): pondus (weight): moles (great quantity or size, usually with the notion of excess or unshapeliness): corpus (the total, body of things connected or found together): turba (a confused crowd): the mass of the booty, summa prasdae: a great mass of money, magnum pondus argenti: the mass of the troops, moles exercitus: to heap together a mass of words, turbam congregare (Quint., 10, 1, 7): a mass of materials, silva rerum (Cic., De Or., 3, 26, 103). A Roman service, *missa: a mass-book, *missale.