Strong's:ἱεράτευμα the priestly fraternity, i.e. sacerdotal order (figuratively)Derivation: from G2407;KJV Usage: priesthood. G2407
TBESG:ἱεράτευμαpriesthoodG:N-N ἱεράτευμα, -τος, τό (< ἱερατεύω), [in LXX: βασίλειον ἱ., Refs Exo.19:1-25 6:1-30 (כֹּהֵן מַמְלָכָה) Refs Exo.23:22, 2Ma.2:17 * ;] a priesthood, body of priests: ἱ ἅγιον, 1Pe.2:5; βασ. ἱ, 1Pe.2:9 (LXX, Ex, l.with).† (AS)
ἱεράτευμα hierateuma hee-er-at'-yoo-mah From G2407; the priestly fraternity, that is, a sacerdotal order (figuratively)KJV Usage: priesthood.
ἱερατεύω hierateuō hee-er-at-yoo'-o Prolongation from G2409; to be a priest, that is, perform his functionsKJV Usage: execute the priest’s office.
ἱερατεία hierateia hee-e-at-i'-ah From G2407; priestliness, that is, the sacerdotal functionKJV Usage: office of the priesthood, priest’s office.