Usage: 2 forms in 12 verses
Form Translated As     In Verse(s)
ευθηνίασ of prosperity LXX.Gen.41.34LXX.Gen.41.53
prosperity LXX.Gen.41.47
ευθηνία my prosperity LXX.Ps.30.6
prosperity LXX.Gen.41.29LXX.Gen.41.31LXX.Gen.41.48LXX.Ps.122.6LXX.Ps.122.7LXX.Ezek.16.49LXX.Dan.11.21LXX.Dan.11.24

Liddell-Scott-Jones

εὐθηνία (euthēnia) prosperity G:N-F

εὐθηνία, ,

prosperity, plenty, [LXX+2nd c.BC+]; τῶν τὰς καλὰς ἀγόντων ἡμέρας εὐθηνία, description of Isis, [Refs 2nd c.AD+]; πάντα τὰ πρὸς εὐθηνίαν τῆς χώρας [Refs]; σώματος good condition, [Refs]

__2 personified as a goddess, Abundance, Plenty, [Refs]
__3 generally, abundance, φρονήσεως [Refs 1st c.AD+]; variant in [Refs 4th c.BC+]
__II like Latin annona, corn-supply, εἰς εὐθηνίαν σιτωνίας [Refs 1st c.BC+]; ἀπὸ σιτίων φερομένη εὐθηνία [εὐθηνίας ἐπιμελητής “IG” 4.795 (2nd c.AD)">Refs 1st c.AD+]; γεναμένῳ ἀγορανόμῳ καὶ ἐπὶ τῆς εὐθηνίας Mitteis [Refs 2nd c.AD+]; κοσμητεύσας εὐθηνίας (see. εὐθένεια).
__II.2 alargess of corn, εὐθηνία ἔτους τρίτου, personified on coins of Alexandria, [εὐθηνίας ἢ νομὰς ἀθροιζόμενα 2nd c.AD: Herodianus Grammaticus 7.2.5. ">Refs 2nd c.AD+]

LSJ Scripture Refs: LXX.Gen.41.29