Strong's #4583: seleniazomai (pronounced sel-ay-nee-ad'-zom-ahee)

middle voice or passive from a presumed derivative of 4582; to be moon-struck, i.e. crazy:--be a lunatic.

Thayer's Greek Lexicon:

́

selēniazomai

1) to be moon-struck or lunatic

2) to be epileptic

2a) epilepsy being supposed to return and increase with the increase of the moon. This meaning is doubtful as the Greeks knew nothing of epilepsy.

Part of Speech: verb

Relation: middle voice or passive from a presumed derivative of G4582

Usage:

This word is used 2 times:

 

Matthew 4:24: "torments, and those which were possessed with devils, and those which were lunatic, and those that had the palsy; and"
Matthew 17:15: "on my son: for he is lunatic, and sore vexed: for"