Strong’s Greek
G3701 — optasia
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ὀπτασία
optasia — pronounced op-tas-ee'-ah
from a presumed derivative of 3700; visuality, i.e. (concretely) an apparition:--vision. see GREEK for 3700
4 occurrences in the KJV.
Luke 1:22
And when he came out, he could not speak unto them: and they perceived that he had seen a vision in the temple: for he beckoned unto them, and remained speechless.
Luke 24:23
And when they found not his body, they came, saying, that they had also seen a vision of angels, which said that he was alive.
Acts 26:19
Whereupon, O king Agrippa, I was not disobedient unto the heavenly vision:
2 Corinthians 12:1
It is not expedient for me doubtless to glory. I will come to visions and revelations of the Lord.