Strong's G3728 — ὁρκωμοσία (noun)
horkomosia (hor-ko-mos-ee'-ah) n.
1. asseveration on oath
[from a compound of G3727 and a derivative of G3660]
KJV: oath 
Root(s): G3727, G3660 
Hebrew root: ὀμνύω
Occurrences: 4