περιόδων (periodon)
περιόδων is an Ancient Greek form of περίοδος, meaning “circuit, circumference”. It is the genitive plural feminine noun.
Found 40 times in the Ancient Greek texts on Socratos.
Where it is used
Plutarch, Theseus 21.1: … νης ἔλαβεν, ἐχόρευσε μετὰ τῶν ἠϊθέων χορείαν ἣν ἔτι νῦν ἐπιτελεῖν Δηλίους λέγουσι, μίμημα τῶν ἐν τῷ Λαβυρίνθῳ περιόδων καὶ διεξόδων, ἔν τινι ῥυθμῷ παραλλάξεις καὶ ἀνελίξεις ἔχοντι γιγνομένην.
All forms of περίοδος (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.