Energy

Medical definition of energy:

Activity; the exertion of power, dynamic force.

Usage examples for energy:

• Life is not long enough for such wasted energy "Amusements in Mathematics, – Henry Ernest Dudeney"

• It meant general failure of energy the kind of thing I've known myself, only too well. "The Whirlpool, – George Gissing"

• " I will receive her and love her as a mother," said Lizzie, with all her energy "The Eustace Diamonds, – Anthony Trollope"

• Gilbert knew all the cost in time, energy money and reputation that he would have to pay- that he did pay. "Gilbert Keith Chesterton, – Maisie Ward"