aeromantia
From LSJ
ἐν πίθῳ ἡ κεραμεία γιγνομένη → trying to run before you can walk, the potter's art starting on a big jar
Latin > English (Lewis & Short)
āĕrŏmantīa: ae, f., = ἀερομαντεία,
I divination from the state of the air, aëromancy, Isid. Orig. 8, 9.