Atlantis is the name given by Plato to a lost civilisation that he claims to have been told to his ancestor, Solon, by Egyptian priests. The word simply means ‘daughter of Atlas’ and is a concoction of Solon’s or Plato’s rather than the name recorded by the Egyptians.
The word is spelt slightly differently in the various western European languages.
For the purpose of more effective Internet searching I suggest that you access the Babylon website(a), which can translate terms into a range of languages.
(a) http://dictionary.babylon.com/atlantis/

