ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
P. and V. δύναμις, ἡ.
of drugs, etc.: V. δύνασις, ἡ, ἰσχύς, ἡ.