Atlantis is a legendary island first mentioned in Plato's dialogues Timaeus and Critias. According to the story, it was a naval power that conquered many parts of Western Europe and Africa before sinking into the OCEAN. The crossword solutions for the term Atlantis are MIR (3 letters), MILO (4 letters), SANK (4 letters), OCEAN (5 letters), GENII (5 letters), and PLATO (5 letters). Mir is likely a reference to the mythical ruler of Atlantis, while Milo is likely a reference to the Greek mythological figure who attempted to dig a tunnel through a mountain. Sank is likely a reference to the sinking of Atlantis, while OCEAN is likely a reference to the body of water in which Atlantis is said to have sunk. GENII is likely a reference to the mythical creatures associated with Atlantis, while Plato is likely a reference to the philosopher who first wrote about the island.