Lexical Definition

‎ἀποστάσιον‎ apostásion (ap-os-tas'-ee-on) divorce G:N-N
neuter of a (presumed) adjective from a derivative of ‎ἀφίστημι‎

(writing of) divorcement.

Usage: 3 forms in 7 verses
Form Translated As     In Verse(s)
ἀποστασίου of divorce Matt.19.7Mark.10.4
ἀποστάσιον a letter of divorce’ Matt.5.31
αποστασίου a certificate of divorce LXX.Deut.24.1
certificate of divorce LXX.Deut.24.3LXX.Isa.50.1LXX.Jer.3.8

Abbott-Smith

ἀποστάσιον, -ου, τό (< ἀφίστημι), [in LXX; De 24:1, 3, Je 3:8, Is 50:1 (כְּרִיתֻת, כְּרִיתוּת)*;]
1. in cl., only in phrase ἀποστασίου δίκη, an action against a freedman for forsaking his προστάτης (Dem.).
2. In LXX, βιβλίον ἀποστασίου, a bill of divorce: Mt 19:7, Mk 10:4; in same sense ἀ. alone (MM, s.v.), Mt 5:31 (for other late exx., v. MM, s.v.; Kennedy, Sources, 121).†

Abbott-Smith References

Book Refs
Deuteronomy 24:1 · 24:3
Isaiah 50:1
Jeremiah 3:8
Matthew 5:31 · 19:7
Mark 10:4

Liddell-Scott-Jones

Included with: ἀποστάσιον-στᾰσίου δίκη

action against a freedman for having forsaken his προστάτης and chosen another, . ὀφλεῖν[Refs 4th c.BC+]

__II ἀποστάσιονστασίου βιβλίον writing or bill of divorce, [ἀποστάσιονστάσιον NT.Matt.5.32. ">LXX+NT]
__III ἀποστάσιονστασίου συγγραφή deed of cession, conveyance, [Refs 3rd c.BC+]; ἀντίγραφονίου[Refs 2nd c.AD+]; with συγγραφή omitted, especially in phrase πρᾶσις καὶ ἀποστάσιονστασίου[Refs 1st c.AD+]

LSJ Scripture Refs: LXX.Deut.24.1Matt.19.7Mark.10.4Matt.5.32