As the name of a French gold coin 17c.-18c., short for Louis d'or, from the French kings of that name (originally Louis XIII) pictured on the coins. Louis-Quatorze (1855) refers to styles reminiscent of the time of King Louis XIV of France (1643-1715).
French colony, from 1812 a U.S. state, named 1682 by French explorer la Salle for Louis XIV of France. The name originally applied to the entire Mississippi basin. Related: Louisianian. The Louisiana Purchase, accomplished in 1803, was so called by 1806.
type of tropical woody vine, 1849, named for French navigator Louis Bougainville (1729-1811).
city in France, French Orléans, from Roman Aurelianum, named 3c. C.E. in honor of emperor Aurelian, who reigned from 270 to 275 and reunited Gaul with Rome. The place had formerly been called Genabum, from roots *gen- "bend" (in a river) + *apa "water." In French politics, the name of a family descended from a younger brother of Louis XIV; one of its princes reigned 1830-1848 as Louis Philippe. Hence Orleanist "an adherent of the princes of Orleans."