Megaleiótēs (G3168) — Meaning of the Greek word Megaleiótēs in English — Strong's Lexicon

Definition

feminine noun

superbness, i.e. glory or splendor

the majesty of God
of the visible splendor of the divine majesty as it appeared in the transfiguration of Christ

Megaleiótēs occurs 3 times in the King James.

Distribution of the word across the Bible: Luke (1), Acts (1), 2 Peter (1)

Luke 9:43 — And they were all amazed at the mighty power (μεγαλειότητι) of God. But while they wondered every one at all things which Jesus did, he said unto his disciples,
Acts 19:27 — So that not only this our craft is in danger to be set at nought; but also that the temple of the great goddess Diana should be despised, and her magnificence (μεγαλειοτητα) should be destroyed, whom all Asia and the world worshippeth.
2 Peter 1:16 — For we have not followed cunningly devised fables, when we made known unto you the power and coming of our Lord Jesus Christ, but were eyewitnesses of his majesty (μεγαλειότητος).