ἴσχυσεν (ischysen)
ἴσχυσεν is an Ancient Greek form of ἰσχύω, meaning “be strong, have power”. It is the 3rd person singular aorist active indicative.
Found 92 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 4.9.62: … όμενος, ἐν δὲ τοῖς ἠθικοῖς μᾶλλον. ὅθεν καὶ ἐκόμα καὶ ἔτρεφεν ὄνυχας ἀσχολίᾳ τῇ περὶ τοὺς λόγους. τοσοῦτον δʼ ἴσχυσεν ἐν φιλοσοφίᾳ, ὥστε καὶ τοὺς ῥήτορας ἀπολύσαντας ἐκ τῶν σχολῶν παρʼ αὐτὸν ἰέναι καὶ αὐτοῦ ἀκούειν.
All forms of ἰσχύω (conjugation table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.