Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
αποστασίαι his defections LXX.2Chr.33.19
αποστάσεισ defections LXX.Ezra.4.19
αποστάσει in a defection LXX.2Chr.28.19

Liddell-Scott-Jones

ἀπόστασις (apostasis) defection G:N-F

ἀπόστασις-στᾰσις, εως, ,

(ἀφίστημι) causing to revolt, συμμάχων[Refs 5th c.BC+]

__B (ἀφίσταμαι) emanation, εἰδώλων -σεις[Refs 4th c.BC+]
__B.2 slackness, of bandages, [Refs 2nd c.AD+]
__B.3 defection, revolt, ἀπόστασις τινος[Refs 5th c.BC+]; . τῶν Ἀθηναίων, for ἀπὸ τ. ., [Refs]; but τὰς Μεσσηνίων .[Refs 5th c.BC+]
__B.4 departure from, βίου[Refs 5th c.BC+]; separation of effect from cause, [Refs 5th c.AD+]; giving up, cession, . τῶν κτημάτων[Refs 4th c.BC+]; desisting from, disuse of, φάσεως[Refs 2nd c.AD+]
__B.5 distance, ἀφ᾽ ἡμῶν .[ἀπόστασιςστασιν ὅσην ἀφεστηκὼς γίγνεται [prev. author] “R.” 587d,compare 546b; ἐκ μικρᾶς ἀ. 4th c.BC: Aristoteles Philosophus “de Audibilibus” 800b7; τῇ ἀπὸ τῆς γῆς ἀ. [prev. author] “HA” 503a21">Refs 5th c.BC+]; ἐκ τῶν . according to their distances, [Refs]; of time, κατὰ τὴν πρὸς τὸ νῦν .[Refs]; ἐξ ἀποστάσεως at a certain distance, [Refs 4th c.BC+]
__B.6 Rhet., employment of detached phrases, [Refs 2nd c.AD+]
__B.7 lapse, declension, [Refs 3rd c.AD+]
__B.II place where something is put away, repository, storehouse, [Refs 4th c.BC+]
__B.III in Medicine texts,suppurative inflammation, throwing off the peccant humours left by fever, etc., [Refs 5th c.BC+]
__B.III.2 of diseases, transition from one to another, [Refs 5th c.BC+]
__B.III.3 lesion of continuity, [Refs 2nd c.AD+]
__B.III.4 degree of heat, cold, etc., [Refs]