SINGULI IN SOLIDUMsinguli in solidum (sing-gy[schwa]-lI in sol-[schwa]-d[schwa]m). [Latin] Hist. Each for the whole.
¡°Where there are several co-obligants in one obligation, each bound in full performance, they are said to be liable singuli in solidum; and where each is liable only for his own proportion of the debt, they are said to be liable pro rata.¡± John Trayner, Trayner’s Latin Maxims 580 (4th ed. 1894).