διατείνω

1. to stretch to the uttermost , τόξον (Herdotus Historicus): to stretch out , τὰς χεῖρας (Xenophon Historicus)

2. intransitive to extend, continue , (Aristotle Philosopher)

3. Mid. and Pass. to exert oneself , (Xenophon Historicus), etc.; διατεινάμενος at full speed , (Xenophon Historicus); with all one's force , Theocr.; διατείνεσθαι πρός τι to exert oneself for a purpose, (Xenophon Historicus)

4. to maintain earnestly, contend for , τι (Demosthenes Orator)

5. in strict sense of Mid. to stretch out for oneself , δ. τὰ βέλεα to have their lances poised , Hdt.; δ. τὸ τόξον to have one's bow strung , (Herdotus Historicus) (ML)