Meanings
Origin
Replaced the earlier MBtu (one thousand BTUs) as the 'M' could be misinterpreted as the SI prefix mega- (one million) or milli- (one thousandth)
Full word history & related roots →Cite this entry
APA
MMBtu. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/MMBtu
MLA
“MMBtu.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/MMBtu. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “MMBtu,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/MMBtu.
Source: MMBtu on Wiktionary, CC BY-SA 4.0.