theoria
From LSJ
Τραφὲν ὄρεσι καὶ φάραγξιν ἀγρίαις, κήρυξ πέφυκα τῆς λόγου ὑμνῳδίας. Φωνήν μὲν οὐκ ἔναρθρον, εὔηχον δ' ἔχω (Byzantine riddle) → Raised in the mountains and wild ravines, I have become the herald of hymns that are sung. I have no articulate voice...
Latin > English (Lewis & Short)
thĕōrĭa: ae, f., = θεωρία,>
I a philosophic speculation, theory, Hier. in Ezech. 12, 40, 4 (in Cic. Att. 12, 6, 1, written as Greek).