Strong's #2259: henika (pronounced hay-nee'-kah)
of uncertain affinity; at which time:--when.
Thayer's Greek Lexicon:
̔́
hēnika
1) at which time, when
2) whenever, at length when
Part of Speech: particle
Relation: of uncertain affinity
Usage:
This word is used 2 times:
2 Corinthians 3:15: "But even unto this day, when Moses is read, the veil is"
2 Corinthians 3:16: "Nevertheless when it shall turn to the Lord, the veil"