The word for today is…
jurisprudence (noun):
1: the science or philosophy of law
2a: a system or body of law
b: the course of court decisions as distinguished from legislation and doctrine
3: a department of law
Source : Merriam -Webster
Etymology : "For a farewell to our jurisprudent, I wish unto him the gladsome light of jurisprudence…." With this farewell to English jurist Sir Thomas Littleton, another jurist named Sir Edward Coke welcomed two new words into English. In 1628, his jurisprudence meant "knowledge of or skill in law," a now-archaic sense that reflects the meaning of the word's root. Jurisprudence goes back to the Latin phrase prudentia juris (literally "skill in law"), from which came the Late Latin formation jurisprudentia, and subsequently the English word. The noun jurisprudent means "one skilled in law"—in other words, a jurist or a judge. There's also jurisprude, a somewhat rare 20th-century back-formation created from jurisprudence with influence from prude. It means "one who makes a showy display of jurisprudential learning."
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