Strong's G4220 — πότερον (adverb)
poteron (pot'-er-on) adv.
1. interrogative as adverb, which (of two), i.e. is it this or that
[neuter of a comparative of the base of G4226]
KJV: whether 
Root(s): G4226 
Hebrew root: ποῦ
Occurrences: 1