absolute zero
noun
: a theoretical temperature characterized by complete absence of heat and motion and equivalent to exactly −273.15°C or −459.67°F
Examples of absolute zero in a Sentence
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That’s because everything has a temperature above absolute zero and radiates photons as heat, often with longer wavelengths (infrared light) than can be seen with our eyes.
—
Conor Feehly, Scientific American, 16 June 2025
For example, some quantum computers have to be operated at very cold temperatures, near absolute zero.
—Kif Leswing, CNBC, 27 June 2025
The nuclear fusion reaction is surrounded by a magnetic field more than 400,000 times more powerful than the Earth’s and chilled with cryogenic gases close to absolute zero.
—Ella Nilsen, CNN Money, 6 May 2025
Space is very cold—like near absolute zero—so cooling wouldn’t be needed.
—Michael Wu, Forbes.com, 14 May 2025
See All Example Sentences for absolute zero
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Conor Feehly, Scientific American, 16 June 2025
For example, some quantum computers have to be operated at very cold temperatures, near absolute zero.
—Kif Leswing, CNBC, 27 June 2025
The nuclear fusion reaction is surrounded by a magnetic field more than 400,000 times more powerful than the Earth’s and chilled with cryogenic gases close to absolute zero.
—Ella Nilsen, CNN Money, 6 May 2025
Space is very cold—like near absolute zero—so cooling wouldn’t be needed.
—Michael Wu, Forbes.com, 14 May 2025
See All Example Sentences for absolute zero
Cite this Entry
“Absolute zero.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/absolute%20zero. Accessed 21 Jul. 2025.
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