ὄρους (orous)
ὄρους is an Ancient Greek form of ὅρος, meaning “boundary; mountain”. It is the accusative plural masculine noun.
It can also be a form of ὀρούω, “rush, dart”.
Found 536 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 2.23.1: οἱ δὲ Πελοποννήσιοι, ἐπειδὴ οὐκ ἐπεξῇσαν αὐτοῖς οἱ Ἀθηναῖοι ἐς μάχην, ἄραντες ἐκ τῶν Ἀχαρνῶν ἐδῄουν τῶν δήμων τινὰς ἄλλους τῶν μεταξὺ Πάρνηθος καὶ Βριλησσοῦ ὄρους.
New Testament, Matthew 24.3: Καθημένου δὲ αὐτοῦ ἐπὶ τοῦ Ὄρους τῶν Ἐλαιῶν προσῆλθον αὐτῷ οἱ μαθηταὶ κατʼ ἰδίαν λέγοντες Εἰπὸν ἡμῖν πότε ταῦτα ἔσται, καὶ τί τὸ σημεῖον τῆς σῆς παρουσίας καὶ συντελείας τοῦ αἰῶνος.
Arrian, Ἀλεξάνδρου Ἀνάβασις 4.21.3: … τόλμης τε καὶ εὐτυχίας προκεχωρήκει. τέμνων δὴ τὰς ἐλάτας ʽπολλαὶ γὰρ καὶ ὑπερύψηλοι ἐλάται ἦσαν ἐν κύκλῳ τοῦ ὄρουσʼ κλίμακας ἐκ τούτων ἐποίει, ὡς κάθοδον εἶναι ἐς τὴν φάραγγα τῇ στρατιᾷ· οὐ γὰρ ἦν ἄλλως κατελθεῖν ἐς αὐτήν.
All forms of ὅρος (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.