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Definitions

diadem

[dahy-uh-dem] / ˈdaɪ əˌdɛm /


Example Sentences

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Among them are an emerald-and-diamond necklace that Napoleon I gave his wife, Empress Marie-Louise, and a diadem that once belonged to the Empress Eugenie, which is dotted with nearly 2,000 diamonds.

From Barron's • Oct. 30, 2025

If you're looking at it and wondering why it seems familiar, it might be because that diadem was seen on stamps from the late Queen's reign.

From BBC • Nov. 7, 2023

Almost 1 meter in diameter, the vessel entombed a woman in her late 20s with a shining silver diadem on her forehead.

From Science Magazine • Oct. 4, 2023

But Russian forces managed to find the room and lifted the diadem along with 1,700 other artifacts.

From Washington Post • Nov. 4, 2022

“Professor Flitwick says the diadem vanished with Ravenclaw herself. People have looked, but,” she appealed to her fellow Ravenclaws, “nobody’s ever found a trace of it, have they?”

From "Harry Potter and the Deathly Hallows" by J.K. Rowling