Usage: 2 forms in 14 verses
Form Translated As     In Verse(s)
τριακοστώ thirtieth LXX.1Kgs.16.23 • LXX.1Kgs.16.29 • LXX.2Kgs.13.10 • LXX.2Kgs.15.8 • LXX.2Kgs.15.13 • LXX.2Kgs.15.17 • LXX.2Kgs.25.27 • LXX.2Chr.16.1 • LXX.2Chr.16.12 • LXX.Neh.13.6 • LXX.Jer.52.31 • LXX.Ezek.1.1
τριακοστού thirtieth LXX.2Chr.15.19 • LXX.Neh.5.14

Liddell-Scott-Jones

τριακοστός (triakostos) thirtieth G:A

τριακοστός,

Ionic dialect τρῐηκ-, ή, όν, thirtieth, [Refs 5th c.BC+]; Aeolic dialect τρῐάκοιστος [ᾱ] [Refs]

__II ἡ τ. duty of one-thirtieth, [Refs 4th c.BC+]