noun, noun which may take the genitive case particle 'no'
extremely low temperature (below 0.01 K)
Technical term in physics and cryogenics, referring to temperatures near absolute zero, specifically below 0.01 kelvin.
Ultra-low temperature physics studies the properties of matter at temperatures close to absolute zero.
This experiment requires an ultra-low temperature environment.
Compound of 超 (chō, 'ultra-') and 低温 (teion, 'low temperature').