Jurisprudence, n.
Etymology: [L. jurisprudentia; jus, juris, right, law + prudentia a foreseeing, knowledge of a matter, prudence: cf. F. jurisprudence. See Just, a., and Prudence.]
The science of juridical law; the knowledge of the laws, customs, and rights of men in a state or community, necessary for the due administration of justice. The talents of Abelard were not confined to theology, jurisprudence, philosophy. J. Warton. Medical jurisprudence, that branch of juridical law which concerns questions of medicine.
Shades of meaning
Fernald has no entry of its own for jurisprudence; he lists it under law.
Where he writes about it:
A code is a system of laws; jurisprudence is the science of law, or a system of laws scientifically considered, classed, and interpreted; legislation, primarily the act of legislating, denotes also the body of statutes enacted by a legislative body. — from law
An economy (Gr. oikonomia, primarily the management of a house) is any comprehensive system of administration; as, domestic economy; but the word is extended to the administration or government of a state or people, signifying a body of laws and regulations, with the entire system, political or religious, especially the latter, of which they form a part; as, the code of Draco, Roman jurisprudence, British legislation, the Mosaic economy. — from law