Usage: 1 form in 1 verse
Form Translated As     In Verse(s)
τριακονταετούσ thirty years old LXX.1Chr.23.3

Liddell-Scott-Jones

τριακονταέτης (triakontaetēs) thirty years old G:N-N

τριακονταέτης-έτης,

Ionic dialect τρῐηκ-, ες, thirty years old, [Refs 5th c.BC+]; also in forms τριᾱκοντέτης (which see) and τριᾱκοντούτης, ου, , accusative plural τοὺς τριακοντούτας the men of thirty years, [Refs 5th c.BC+]; nominative singular masculine -ούτης [Refs 2nd c.AD+]; feminine τριακοντοῦτις, [Refs 4th c.BC+]

__II of or for thirty years, τριακονταέτεις σπονδαί [Refs 5th c.BC+] (though elsewhere he uses the form in νς as feminine, see above).