A 'hydronym' (from
Greek ''hudor'', "water" and ''onuma'', "name") is a proper name of a body of water. 'Hydronymy' is the study of hydronyms and of how bodies of water receive their names and how they are transmitted through history. It can apply to rivers, lakes, even oceanic elements.
Like most
toponyms, as linguistic items, hydronyms are very conservative, with successor peoples often retaining the name given a body of water. For example,
Mississippi has passed from
Native Americans to contemporary Americans. Often a given body of water will have several entirely different names given to it by different peoples. For example,
Vltava and
Moldau are the
Czech and
German names, respectively, for the same river in
central Europe.
Among the Indo-European languages, hydronyms from various languages can all share a common
etymon. The
Danube,
Don,
Dniester,
Dnieper and
Donets rivers all contain
Proto-Indo-European (''
★ danu-''), (
IEW 175), meaning "river".
See also
★
Old European hydronymy
★
Rigvedic rivers
★
List of river name etymologies
★
Toponym
Source
Robert S.P. Beekes, "River",
Encyclopedia of Indo-European Culture, pp. 486-87.