名詞 diadem:

1. an ornamental jewelled headdress signifying sovereignty
   同義詞：crown

1. A diadem was worn as sign of royal power.
   戴著的皇冠是王權(quán)的象征。

di.a.dem

n.（名詞）
A crown worn as a sign of royalty.
王冠：做為王權(quán)象征的王冠
Royal power or dignity.
王權(quán)或王的尊嚴(yán)
v.tr.（及物動(dòng)詞）
di.a.demed,di.a.dem.ing,di.a.dems
To adorn with or as if with a diadem.
為…加冕：以或似以象征王權(quán)的頭帶裝飾

來(lái)源：
Middle English diademe
中古英語(yǔ) diademe
from Old French
源自 古法語(yǔ)
from Latin diadôma
源自 拉丁語(yǔ) diadôma
from Greek [band]
源自 希臘語(yǔ) [箍帶]
from diadein [to bind around]
源自 diadein [捆綁]
dia- [dia-]
dia- [前綴，表.完全的，有始有終的.]
dein dô- [to bind]
dein dô- [捆]