ἐστί
From LSJ
ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
French (Bailly abrégé)
3ᵉ sg. prés. de εἰμί.
English (Strong)
third person singular present indicative of εἰμί; he (she or it) is; also (with neuter plural) they are: are, be(-long), call, X can(-not), come, consisteth, X dure for a while, + follow, X have, (that) is (to say), make, meaneth, X must needs, + profit, + remaineth, + wrestle.
Russian (Dvoretsky)
ἐστί: 3 л. sing. praes. к εἰμί.
