A term of civil-law origin, Blgnifylug that the right or interest spoken of is joint or common. A “solidary obliga-tion" corresponds to a “joint and several’’ obligation in the common law; that is, one fpr which several debtors are bound in such wise that each is liable for the entire amount, and not merely for his proportionate share. But in the civil law the term also iucludes the case where there are several creditors, as against a common debtor, each of whom is entitled to receive the entire debt and give an acquittance for It
Source: Black's Law Dictionary 2nd Ed (1910)