Usage: 5 forms in 41 verses
Form Translated As     In Verse(s)
δυναστείασ domination LXX.Exod.6.6
dominations LXX.Ps.89.13
his dominations LXX.Ps.78.4
his dominion LXX.1Chr.29.30
might LXX.Dan.11.31 • LXX.Mic.3.8
mighty deeds LXX.Ps.106.2
of his command LXX.Job.37.6 • LXX.Nah.2.3
of his dominion LXX.1Kgs.9.19 • LXX.Ps.103.22
of their dominions LXX.Jer.49.35
of your dominations LXX.Ps.21.13
δυναστείαν dominion LXX.Jer.34.1
his might LXX.Ps.106.8
of your dominion LXX.Ps.145.11 • LXX.Ps.145.12
of your might LXX.Ps.71.19
your might LXX.Ps.80.2
δυναστείαισ commands LXX.Ps.90.10
dominations LXX.Ps.20.6
his dominations LXX.Ps.150.2
might LXX.Amos.2.16
δυναστείαι his dominations LXX.1Kgs.16.5 • LXX.1Kgs.16.27 • LXX.2Kgs.13.8 • LXX.2Kgs.13.12 • LXX.2Kgs.14.28
his dominions LXX.1Kgs.22.45
δυναστεία Their domination LXX.Jer.51.30
domination LXX.Ezek.22.25
dominion LXX.1Chr.29.12 • LXX.2Chr.20.6 • LXX.Ps.65.6
his domination LXX.2Kgs.14.15 • LXX.Ps.66.7
his dominations LXX.2Kgs.10.34 • LXX.2Kgs.20.20
his dominion LXX.1Kgs.15.23
might LXX.Ps.71.16 • LXX.Ps.147.10

Liddell-Scott-Jones

δυναστεία (dunasteia) command G:N-F

δυναστεία-εία, ἡ,

power, lordship, domination, [Refs 5th c.BC+]; πολιτικαὶ δ. the exercise of political power, [Refs 5th c.BC+]

__II close oligarchy, opposed to ἰσονομία, [Refs 5th c.BC+]; opposed to πολιτεία, [Refs 4th c.BC+]: in plural, of the Roman Senate, [Refs 2nd c.AD+]
__III in plural, mighty deeds, [LXX]

LSJ Scripture Refs: LXX.2Kgs.13.12