Usage: 3 forms in 4 verses
Form Translated As     In Verse(s)
τριετίζουσαν being three years old LXX.Gen.15.9LXX.Gen.15.9
τριετίζοντι being three years old LXX.1Sam.1.24
τριετίζοντα being three years old LXX.Gen.15.9

Liddell-Scott-Jones

τριετίζω (trietizō) be three years old G:V

τριετίζω-ίζω,

to be three years old, [LXX]

LSJ Scripture Refs: LXX.1Kgs.1.24