The Collaborative International Dictionary
Joulemeter
Joulemeter \Joule"me`ter\ (j[=oo]l"m[=e]`t[~e]r; joul"m[=e]`t[~e]r), n. An integrating wattmeter for measuring the energy in joules expended in an electric circuit or developed by a machine.
Wiktionary
joulemeter
n. Any of various devices used to measure energy (especially electrical energy) in joules