πεντακοσίοις (pentakosiois)
πεντακοσίοις is an Ancient Greek form of πεντακόσιοι, meaning “five hundred”. It is the dative plural masculine adjective.
Found 58 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 1.107.2: … βρότου ὑπὲρ Πλειστοάνακτος τοῦ Παυσανίου βασιλέως νέου ὄντος ἔτι ἡγουμένου ἐβοήθησαν τοῖς Δωριεῦσιν ἑαυτῶν τε πεντακοσίοις καὶ χιλίοις ὁπλίταις καὶ τῶν ξυμμάχων μυρίοις, καὶ τοὺς Φωκέας ὁμολογίᾳ ἀναγκάσαντες ἀποδοῦναι τὴν πόλιν ἀπεχ …
All forms of πεντακόσιοι (declension 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.