εἰδόμαν
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
French (Bailly abrégé)
ao.2 Moy. dor. de *εἴδω.
Russian (Dvoretsky)
εἰδόμᾱν: и ἰδόμᾱν дор. Trag. aor. 2 med. к *εἴδω.