ἰδέας (ideas)
ἰδέας is an Ancient Greek form of ἰδέα, meaning “form, shape”. It is the accusative plural feminine noun.
Found 180 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 3.1.12: … των ἔλεγεν, ὅτι δεῖ τοὺς συνιδεῖν τὰς τοῦ παντὸς ἀρχὰς ἐπιθυμοῦντας πρῶτον μὲν αὐτὰς καθʼ αὑτὰς διελέσθαι τὰς ἰδέας, οἷον ὁμοιότητα καὶ μονάδα καὶ πλῆθος καὶ μέγεθος καὶ στάσιν καὶ κίνησιν· δεύτερον αὐτὸ καθʼ αὑτὸ τὸ
All forms of ἰδέα (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.