Liddell-Scott-Jones

διατείνω (diateinō) to extend ^G:V

διατείνω,

stretch to the uttermost, δ. τὸ τόξον [Refs 5th c.BC+]; keep stretched out, τὴν χεῖρα [Refs 5th c.BC+]:—passive, extend, μία ἰδέα πάντῃ διατεταμένη [Refs 5th c.BC+]

__I intransitive, extend, [Refs 5th c.BC+]; κατὰ τὸ συνεχὲς ἕως εἰς.. [Refs 2nd c.BC+]; to continue, γένος διέτεινε λαμπρόν [Refs 1st c.AD+]
__I.2 δ. εἰς, ποτί τι, extend or relate to, concern, [Refs 3rd c.BC+]
__I.3 reach, arrive at, extend as far as, πρός.. [Refs 4th c.BC+]; live until the time of, εἴς τινα [Refs 1st c.AD+]
__B middle and passive, exert oneself, τί οὖν.. διετεινάμην οὑτωσὶ σφοδρῶ; [Refs 4th c.BC+]at full speed, [Refs 5th c.BC+]; πὺξ διατεινάμενος [Refs 3rd c.BC+]; strain, exert the voice, [Refs 4th c.BC+]; διατείνεσθαι πρός τι exert oneself for a purpose, [Refs 5th c.BC+]; διετείναντο αὐτὸν μὴ εἰσελθεῖν prevented him from going in, [Refs 5th c.BC+]
__B.2 maintain earnestly, contend, δ. ὡς.. maintain stoutly that.., [Refs 5th c.BC+]
__B.2.b oppose, opposed to συναποφήνασθαι, [Refs 2nd c.AD+]
__B.II in strict sense of middle, stretch oneself, Anaxandrides Comicus 41.67.
__B.II.2 to stretch out for oneself or what is one's own, δ. τὸ τόξον [Refs 5th c.BC+]; τὰ βέλεα ὡς ἀπήσοντες to have their lances poised as if they were about to throw, [Refs 5th c.BC+]