φυσικήν (physiken)
φυσικήν is an Ancient Greek form of φυσικός, meaning “natural; of nature”. It is the accusative singular feminine adjective.
Found 69 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 2.3.11: … στῆναι τοῦ λόγου Μητρόδωρον τὸν Λαμψακηνόν, γνώριμον ὄντα αὐτοῦ, ὃν καὶ πρῶτον σπουδάσαι τοῦ ποιητοῦ περὶ τὴν φυσικὴν πραγματείαν. πρῶτος δὲ Ἀναξαγόρας καὶ βιβλίον ἐξέδωκε συγγραφῆς. φησὶ δὲ Σιληνὸς ἐν τῇ πρώτῃ τῶν Ἱστοριῶν ἐπὶ …
All forms of φυσικός (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.