btu
41Btu — • British Thermal Unit – 0.252 kcal …
42BTU — • British thermal unit …
43Btu — see British thermal unit …
44BTU — see British thermal unit …
45BTU — abbr. Basic Transmission Unit (IBM, SNA) acronym British Thermal Unit …
46BTU — British thermal unit (q.v.) …
47Btu — British thermal unit (q.v.) …
48BTU — British thermal unit (q.v.) …
49Btu — British thermal unit (q.v.) …
50BTU — Acronym for British thermal unit. The amount of heat that must be added to one pound of water to raise its temperature one Fahrenheit degree …