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[dahy-uh-dem] /ˈdaɪ əˌdɛm/
a crown.
a cloth headband, sometimes adorned with jewels, formerly worn by monarchs in Asia Minor and other parts of the East.
royal dignity or authority.
verb (used with object)
to adorn with or as if with a diadem; crown.
Origin of diadem
1250-1300; Middle English diademe (< Anglo-French) < Latin diadēma < Greek diádēma fillet, band, equivalent to diadē- (verbid stem of diadeîn to bind round + -ma noun suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for diadem
Contemporary Examples
Historical Examples
  • Mrs. Roberts had been at work hunting diamonds for His diadem.

    Ester Ried Yet Speaking Isabella Alden
  • On a throne of rocks, with a robe of clouds,   And a diadem of snow.

  • In truth it was upon that brow that he would have wished to place the diadem.

    King Candaules Thophile Gautier
  • I put on righteousness, and it clothed me: my judgment was as a robe and a diadem.

    Gathering Jewels

    James Knowles and Matilda Darroch Knowles
  • Americans are all equal—this is one of the gems in our diadem.

  • By the diadem he wore upon his head Gudea knew that the figure must be a god.

  • How he would plead for the power that would crown him with the diadem of a preacher!

    Broken Bread Thomas Champness
  • Inside three minutes the two craft were clear of the diadem.

    The World Peril of 1910 George Griffith
British Dictionary definitions for diadem


a royal crown, esp a light jewelled circlet
royal dignity or power
(transitive) to adorn or crown with or as with a diadem
Word Origin
C13: from Latin diadēma, from Greek: fillet, royal headdress, from diadein to bind around, from dia- + dein to bind
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for diadem

late 13c., from Old French diademe and directly from Latin diadema "cloth band worn around the head as a sign of royalty," from Greek diadema, from diadein "to bind across," from dia- "across" (see dia-) + dein "to bind," related to desmos "band," from PIE *de- "to bind." Used of the headband worn by Persian kings and adopted by Alexander the Great and his successors.

Online Etymology Dictionary, © 2010 Douglas Harper
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