Source : Webster's Revised Unabridged Dictionary (1913)

Poncelet \Ponce"let\, n. [After Jean Victor Poncelet, French
   engineer.] (Physics)
   A unit of power, being the power obtained from an expenditure
   of one hundred kilogram-meters of energy per second. One
   poncelet equals g watts, when g is the value of the
   acceleration of gravity in centimeters.