διάδημα

diadēma
diadem
Strong’s G1238Noun, neuter3 times in the New Testament (critical text)

Where it occurs

Translated as

royal crowns3

In the text

Abbott-Smith

διάδημα, -τος, τό
(διαδέω, to bind round), [in LXX for כֶּתֶר (as Est.1:11), etc. ;]
the band round the τιάρα of a Persian king; a diadem, the badge of royalty: Rev.12:3 13:1 19:12.†
SYN.: στέφανος, the badge of "victory, of valour, of nuptial joy, of festal gladness " (but see M, Th., i, 219; cf. DB, i, 530, 604).
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.