theoria
From LSJ
Εἰ μὲν ἐπ' ἀμφοτέροισιν, Ἔρως, ἴσα τόξα τιταίνεις, εἶ θεός (Rufinus, Greek Anthology 5.97) → If, Eros, you're stretching your bow at both equally, then you're a god.
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).
Latin > French (Gaffiot 2016)
thĕōrĭa, æ, et thĕōrĭcē, ēs, f. (θεωρία, θεωρική), la spéculation, la recherche spéculative : Hier. Ezech. 12, 40 ; Ep. 30, 1 ; Cassian. Coll. 14, 2.