Main Entry:

di·a·dem

Pronunciation:

\ˈdī-ə-ˌdem, -dəm\

Function:

noun

Etymology:

Middle English diademe, from Anglo-French, from Latin diadema, from Greek diadēma, from diadein to bind around, from dia- + dein to bind; akin to Sanskrit dāman rope

Date:

13th century

1 a: crown 2 ; specifically : a royal headband b: crown 6a(1)2: something that adorns like a crown