peritome (Greek #4061)
circumcision (the rite, the condition or the people, literally or figuratively)
KJV usage: X circumcised, circumcision.
Pronounce: per-it-om-ay'
oktaemeros (Greek #3637)
an eight-day old person or act
KJV usage: the eighth day.
Pronounce: ok-tah-ay'-mer-os
Origin: from 3638 and 2250