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

Recent Examples on the Web

To produce the prebiotic molecules, the researchers first froze simple gases to near absolute zero. —Jack Knudson, Discover Magazine, 22 Apr. 2025

Only the quantum-processing layer beneath them, the layer holding the qubits, is kept near absolute zero temperature. —IEEE Spectrum, 24 Mar. 2020

In this case, indium arsenide (a semiconductor) and aluminum (a superconductor) are combined, cooled to near absolute zero and tuned with magnetic fields to achieve the state known as topological superconductivity. —New Atlas, 20 Feb. 2025

The technology is still in its early stages, and its hardware requires precise operating conditions, such as cryogenic cooling near absolute zero. —Jason Snyder, Forbes, 9 Jan. 2025

Word History

First Known Use

1798, in the meaning defined above

Rhymes for absolute zero

• biro
• spiro
• nonzero
• subzero
• superhero

Kids Definition

absolute zero

noun

: a hypothetical temperature that has never been reached, represents no heat at all, and is equal to approximately −273.15°C or −459.67°F

Medical Definition

absolute zero

noun

: a theoretical temperature characterized by complete absence of heat and equivalent to exactly −273.15°C or −459.67°F