artesian: [19] In the 18th century drillings made in Artois (a former northern French province roughly corresponding to the modern Pas-de- Calais) produced springs of water which rose spontaneously to the surface, without having to be pumped. The name of the province, in its erstwhile form Arteis, was bestowed on the phenomenon, and has been so used ever since. [artesian etymology, artesian origin, 英语词源]