board of trade unit | sense examples, Usage and Definition from wordnet dictionary online

Noun board of trade unit has 1 sense

kilowatt hour, kW-hr, Board of Trade unit, B.T.U. - a unit of energy equal to the work done by a power of 1000 watts operating for one hour
--₁ is a kind of work unit, heat unit, energy unit
--₁ has parts: watt-hour