Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
πολυήμεροσ many days LXX.Deut.25.15
of many days LXX.Deut.22.7
πολυήμεροι many days LXX.Deut.30.18

Liddell-Scott-Jones

πολυήμερος (poluēmeros) of many days G:A

πολυήμερος-ήμερος, ον,

lasting many days, δυσεντερίη [Refs 5th c.BC+]; οὐ π. θνῄσκουσι they die in a few days, [Refs 2nd c.AD+]

__II full of days, aged, [LXX]

LSJ Scripture Refs: LXX.Deut.25.15