Quick Definition
μεγαλειότης, τητος, ἡ n.f. majesty
Strong's Definition
from 3167; superbness, i.e. glory or splendor
KJV Usage: magnificence, majesty, mighty power
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
μεγαλειότης, -ητος, 7, (fr. the preceding word), greatness, magnificence, (Athen. 4, 6 p. 130 fin.; for ΠΝ ΘΙ, Jer. xl. (xxxiii.) 9); the majesty of God, Lk. ix. 43; τῆς ᾿Αρτέμιδος, Acts xix. 27; of the visible splendor af the divine majesty as it appeared in the transfiguration of Christ, 2 Pet. i. 16.
Mounce Concise Greek Dictionary
μεγαλειότης megaleiotēs 3x
majesty, magnificence, glory, Lk. 9:43; Acts 19:27; 2 Pet. 1:16*
Abbott-Smith Greek Lexicon
μεγαλειότης, -ητος, ἡ
(< μεγαλεῖος), [in LXX: Je 40 (33):9 (תִּפְאֶרֶת), Da LXX 7:27, I Es 1:5 4:40*;]
splendour, magnificence: Lk 9:43, Ac 19:27, II Pe 1:16 (freq. in π. as a ceremonial title, MM, xvi).†
Moulton & Milligan — Vocabulary of the Greek NT
μεγαλειότης. This subst., which occurs several times in the LXX and Other exx. of the verb | NT in the sense of ‘‘ majesty,” is also found as a ceremonial | title, e.g. CP Herm 1. 33+ (=p. 21) 7 μεγαλειότης τοῦ λαμπροτάτου ἡγεμόνος. τὴν] μεγαλειότητα [το]ῦ ἹΡωμα[ίων δήμου, cf. Lat. matestas populi Αοριαγεῖ.
Liddell-Scott-Jones — Greek-English Lexicon
μεγαλειότης (megaleiotēs) — majesty. μεγᾰλει-ότης, ητος, ἡ, majesty, magnificence, [NT+1st c.AD+]; of a person, greatness, [Refs 2nd c.AD+]
II. as a title, [Refs 1st c.AD+]; ἐν ταῖς μ. γενήσεται [Refs 2nd c.AD+]; also, = Latin majestas, ἡ μ. τοῦ Ῥωμαίων δήμου [Refs 3rd c.AD+]