Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
παρεκτείνου reach forth LXX.Prov.23.4
παρεκτείνον reaching forth LXX.Ezek.47.19

Liddell-Scott-Jones

παρεκτείνω (parekteinō) to reach forth G:V

παρεκτείνω-τείνω,

stretch out in line, deploy an army into line, [Refs 2nd c.BC+]; of a fleet, π. ἐπὶ μίαν ναῦν [Refs 1st c.BC+]: generally, stretch out beside, τὸ σῶμά τινι [Refs 1st c.AD+]; stretch out, εἰς λόγους ταῦτα π. Ps.-[Refs 2nd c.AD+]:—passive, τῆς στρατοπεδείας παρὰ τὸν Ἀσωπὸν -τεταμένης [Refs 1st c.AD+]

__II intransitive, extend, of Place, ἐπὶ τὴν θάλασσαν [LXX+1st c.BC+]; of Time, [Refs 4th c.BC+]; τριταῖοι -τείνοντες, of semi-tertian fevers, [Refs 1st c.BC+]
__II.2 of a man, extend his life, survive, μέχρι τινός [Refs 1st c.BC+]
__II.3 in Logic, to be of wider extent, [Refs 4th c.BC+]
__III in passive, with dative, extend beside or be coextensive with, π. χείλεσι ποταμοῦ [Refs 2nd c.BC+]
__III.2 metaphorically, measure oneself with, παρεκτείνωτείνεσθαί τινι [LXX+3rd c.AD+]

LSJ Scripture Refs: LXX.Ezek.47.19LXX.Prov.23.4