operation
From LSJ
ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → life is not worth living if you do not have at least one friend
English > Greek (Woodhouse)
substantive
virtue, operativeness: V. δύνασις, ἡ, ἰσχύς, ἡ.
in operation: use adj., P. ἔνεργος.
surgical operation: P. and V. τομή, ἡ (Eur., Fragment).
operations in war: P. τὰ πολεμικά.
a most suitable place to usefor our operations in Thrace: P. ἐπικαιρότατον χωρίον πρὸς τὰ ἐπὶ Θρᾴκης ἀποχρῆσθαι (Thuc. 1, 68).