Lexical Definition

‎παλιγγενεσία‎ palingenesía (pal-ing-ghen-es-ee'-ah) regeneration ^G:N-F
from ‎πάλιν‎ and ‎γένεσις‎

regeneration.

• (spiritual) rebirth (the state or the act), i.e. (figuratively) spiritual renovation
• specially, Messianic restoration

Abbott-Smith

*† παλινγενεσία (Rec. παλιγγ-), -ας, ἡ (< πάλιν, γένεσις),
new birth, renewal, restoration, regeneration;
(a) of persons (Plut., Phil., al.), of spiritual regeneration, διὰ λουτροῦ παλινγενεστίας (gen. attr., v. Ellic., in l.), Tit 3:5;
(b) of the world, as in Stoics, Jewish Apocal., al. (v. Dalman, Words, 177 ff.), Mt 19:28.†

Abbott-Smith References

Liddell-Scott-Jones

παλιγγενεσία-γενεσία, ἡ,

rebirth, regeneration, of the world, παλιγγενεσίας ἡγεμόνες, of Noah and his sons, [Refs 1st c.AD+]; renewal of a race, [Refs]; of persons, beginning of a new life, εἰς π. ὁρμᾶν [Refs 1st c.AD+]: hence of restoration after exile, [Refs 1st c.BC+]; transmigration, reincarnation of souls, [Refs 1st c.AD+]; compare μετεμψύχωσις near the end

__2 in Stoic Philos., rebirth of the κόσμος, [Refs 4th c.BC+]
__3 in Medicine texts, relapse, [Refs 2nd c.AD+]; regrowth of a tumour, [Refs 2nd c.AD+]
__II in Roman Law, = restitutio natalium, [Refs 6th c.AD+]
__III in “NT.”,
__III.1 resurrection, [NT]
__III.2 regeneration by baptism, διὰ λουτροῦ παλιγγενεσίας [NT]

_{LSJ Scripture Refs: Matt.19.28 ☩ Titus.3.5}