ultracold

  1. Adjective.  (physics) Of a temperature close to absolute zero, especially one at which quantum-mechanical properties are observed.
  2. Adjective.  Extremely cold.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.