Seven Wonders of the World
In ancient times, the pyramids of Egypt; the Hanging Gardens of Babylon; Phidias's statue of Zeus at Olympia; the temple of Artemis at Ephesus; the tomb, or mausoleum, of King Mausolus at Halicarnassus; the Colossus of Rhodes; and either the Pharos, or lighthouse, at Alexandria or the walls of Babylon. The list of manmade wonders was first compiled by a Hellenistic traveler in the second century BC.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.