Strong's #3590: ogdoos (pronounced og'-do-os)
from 3638; the eighth:--eighth.
Thayer's Greek Lexicon:
̓́
ogdoos
1) the eighth
Part of Speech: adjective
Relation: from G3638
Usage:
This word is used 5 times:
Luke 1:59: "it came to pass, that on the eighth day they came to circumcise the"
Acts 7:8: "circumcised him the eighth day; and Isaac begat Jacob;"
2 Peter 2:5: "but saved Noah the eighth person, a preacher of righteousness, bringing in the flood"
Revelation 17:11: "even he is the eighth, and is of the"
Revelation 21:20: "seventh, chrysolyte; the eighth, beryl; the ninth, a topaz;"