G2428 ἱκετηρία - Strong's Greek Lexicon Number

Dodson:
ἱκετηρία
supplication, entreaty
(originally: the olive branch held in the hand of the suppliant), supplication, entreaty.
Strong's:
ἱκετηρία
intreaty
Derivation: from a derivative of the base of G2425 (through the idea of approaching for a favor);

KJV Usage: supplication.

G2425
Thayer:
1) an olive branch
1a) for suppliants approached the one whose aid they would implore holding an olive branch entwined with white wool and fillets, to signify that they came as suppliants
2) supplication

One occurence of G2428 ἱκετηρία

Hebrews 5:7