ergometer

from WordNet (r) 3.0 (2006)

ergometer
    n 1: measuring instrument designed to measure power [syn:
         {dynamometer}, {ergometer}]

from The Collaborative International Dictionary of English v.0.48

Ergometer \Er*gom"e*ter\, n. [Gr. ? work + -meter.] (Physics)
   A device for measuring, or an instrument for indicating,
   energy expended or work done; a dynamometer. --
   {Er`go*met"ric}, a.
   [Webster 1913 Suppl.]