A diadem is a type of crown, specifically an ornamental headband worn by Eastern monarchs and others as a badge of royalty. The word derives from the Greek διάδημα diádēma, "band" or "fillet", from διαδέω diadéō, "I bind round", or "I fasten".
The term originally referred to the embroidered white silk ribbon, ending in a knot and two fringed strips often draped over the shoulders, that surrounded the head of the king to denote his authority. Such ribbons were also used to crown victorious athletes in important sports games in antiquity. It was later applied to a metal crown, generally in a circular or "fillet" shape. For example, the crown worn by the kings of Anglo-Saxon England was a diadem, as was that of a baron later (in some countries surmounted by three globes). The ancient Celts were believed to have used a thin, semioval gold plate called a mind (Old Irish) as a diadem.
A diadem is also a jewelled ornament in the shape of a half crown, worn by women and placed over the forehead (in this sense, also called tiara). In some societies, it may be a wreath worn around the head. The ancient Persians wore a high and erect royal tiara encircled with a diadem.
By extension, "diadem" can be used generally for an emblem of regal power or dignity. The head regalia worn by Roman Emperors, from the time of Diocletian onwards, is described as a diadem in the original sources. It was this object that the Foederatus general Odoacer returned to Emperor Zeno (the Emperor of the Eastern Roman Empire) after his expulsion of the usurper Romulus Augustus from Rome in 476 CE.
Bracelet made from a diadem with the addition of two foliate elements (c. 1870, Walters Art Museum)
- διάδημα, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus Digital Library
- διαδέω, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus Digital Library
- William Dwight Whitney, The Century dictionary; an encyclopedic lexicon of the English language. New York: The Century co. (1889), page 3,772. Google Book Search.
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- Crown - LoveToKnow 1911. 1911 Encyclopædia Britannica - Free Online.
- Diadem. Livius. Articles on Ancient History.
- diadem Everything2.com.