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Definitions

diadem

[dahy-uh-dem] / ˈdaɪ əˌdɛm /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Museum officials tried to hide the diadem and other objects in a secret basement.

From Washington Post • Nov. 4, 2022

“There’s something I need to do. Professor, do you know where the diadem of Ravenclaw is?”

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