undine

noun

1. any of a group of female water spirits described by Paracelsus.

noun

1. any of various female water spirits

n.1821, from Modern Latin Undina (1650s), coined by Paracelsus (“De Nymphis”) for a water spirit in his alchemical system, from Latin unda “a wave” (see water). Popularized by German romance “Undine, eine Erzählung” (1811) by Baron F.H.C. La Motte Fouqué. Undinism (1928) was coined by sex researcher Havelock Ellis to describe the fetish for urine (which Ellis had); nowadays it would be called urophilia.