Puissant
Pronunciation : Pu"is*sant
Part of Speech : a.
Etymology : [F., originally, a p. pr. formed fr. L. posse to be able: cf. L. potens powerful. See Potent.]
Definition : Defn: Powerful; strong; mighty; forcible; as, a puissant prince or empire. " Puissant deeds." Milton. Of puissant nations which the world possessed. Spenser. And worldlings in it are less merciful, And more puissant. Mrs. Browning.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder