diadem

noun

di·​a·​dem ˈdī-ə-ˌdem How to pronounce diadem (audio)
-dəm
1
a
: crown sense 2
specifically : a royal headband
b
: crown sense 6a(1)
diadems of power
2
: something that adorns like a crown

Examples of diadem in a Sentence

Miss America's diadem was auctioned off for charity.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Empress Eugénie’s diamond diadem and her large corsage-bow brooch — an imperial ensemble of rare craftsmanship — were also part of the loot. Stephen Sorace, FOXNews.com, 26 Oct. 2025 The diadem – a jeweled headpiece worn by royalty – features 24 Ceylon sapphires and 1,083 diamonds that can be detached and worn as brooches, according to the Louvre. Cnn.com Wire Service, Mercury News, 20 Oct. 2025 An ornate gold crown D. A sapphire diadem ⬇️ Scroll down for the answer. Sarah Hutter, CNN Money, 20 Oct. 2025 Only three years have passed since then, but at 41, with the Chanel diadem upon him, Blazy carries a more assured and weathered air. Nathan Heller, Vogue, 14 Oct. 2025 See All Example Sentences for diadem

Word History

Etymology

Middle English diademe "monarch's crown, crownlike headdress," borrowed from Anglo-French, borrowed from Latin diadēma "ornamental headband, crown," borrowed from Greek diadēmat-, diádēma "headband, band wrapped around the headdress by Persian monarchs," from diadē-, variant stem of diadéō, diadeîn "to bind on either side, bandage" (from dia- dia- + déō, deîn "to bind, tie") + -mat-, -ma, resultative noun suffix; Greek déō, deîn probably going back to a zero-grade form (*dh1-i̯é-?) of the Indo-European verbal base *deh1- "tie, bind," whence also Sanskrit ā́-dhyati "(s/he) binds," Hittite tiya "bind!"; from a full grade *deh1- Greek édēsa "(I) bound," Sanskrit dāman-, dā́ma "cord, fetter"

First Known Use

13th century, in the meaning defined at sense 1a

Time Traveler
The first known use of diadem was in the 13th century

Browse Nearby Words

Cite this Entry

“Diadem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diadem. Accessed 3 Nov. 2025.

Kids Definition

diadem

noun
di·​a·​dem ˈdī-ə-ˌdem How to pronounce diadem (audio)
-əd-əm
: a headband or crown worn especially as a symbol of royalty

More from Merriam-Webster on diadem

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!