δύναμις
Etym. from δύναμαι
I. "power, might, strength", Hom.: then, generally, "strength, power, ability" to do a thing, id=Hom.; παρὰ δύναμιν beyond one's "strength", Thuc.; ὑπὲρ δ. Dem.; κατὰ δ. "as far as lies in one", Lat. pro virili, Hdt.
2. "power, might, authority", Aesch., etc.
3. "a force for war, forces", Xen.
4. "a quantity", Lat. vis, χρημάτων δ. Hdt., etc.
II. "a power, faculty, capacity", αἱ τοῦ σώματος δυνάμεις Plat., etc.; also of plants, etc., Xen.
III. "the force or meaning" of a word, Plat., etc.
2. "the worth or value" of money, Thuc.