Definition of

B.t.u.

  1. (noun, quantity) a unit of energy equal to the work done by a power of 1000 watts operating for one hour

via WordNet, Princeton University

Alternate forms of B.t.u.

Hypernyms: energy unit, heat unit, work unit

Note: If you're looking to improve your vocabulary right now, we highly recommend Ultimate Vocabulary Software.

Word of the Moment

Smooth Lip Fern

southeastern United States to northern Mexico and Jamaica