[di.a.dem] n [ME diademe, fr. OF, fr. L diadema, fr. Gk diadema, fr. diadein to bind around, fr. dia- + dein to bind; akin to Skt daman rope] (13c) 1 a: crown 1; specif: a royal headband b: crown 6a(1)
2: something that adorns like a crown
[di.a.dem] n [ME diademe, fr. OF, fr. L diadema, fr. Gk diadema, fr. diadein to bind around, fr. dia- + dein to bind; akin to Skt daman rope] (13c) 1 a: crown 1; specif: a royal headband b: crown 6a(1)
2: something that adorns like a crown
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012