ἰστέον
ἰστέον, one must see
ἰστέον, (*εἴδω, οἶδα)
- one must see, ἰστέον δή Pl. Tht. 202e; ἰ. ἤδη τί ἐστὶ τὸ πρᾶγμα Id. Smp. 217c.
- II one must know, Gal. 5.480, Sch. Nic. Th. 11.