Usage: 2 forms in 7 verses
Form Translated As     In Verse(s)
αποκαθημένησ of a woman sitting apart LXX.Isa.30.22
one sitting apart LXX.Lev.15.33
sitting apart LXX.Lev.20.18LXX.Isa.64.6LXX.Ezek.36.17
αποκαθημένην a woman sitting apart LXX.Lam.1.17
woman sitting apart LXX.Ezek.22.10

Liddell-Scott-Jones

ἀποκάθημαι (apokathēmai) to sit apart G:V

ἀποκάθημαι-ημαι,

sit apart, ἀτιμώμενοι ἀποκατέαται (Ionic dialect for -κάθηνται) [Refs 5th c.BC+]; ἀποκαθημένη, ={αἱμορροοῦσα}, [LXX+1st c.AD+]

__II sit idle, [Refs 2nd c.AD+]

LSJ Scripture Refs: LXX.Lev.20.18