/supəˈkrɪtɪkəl/ (say soohpuh'kritikuhl)

denoting or relating to a nuclear reaction or a nuclear reactor in which a chain-reaction is self-sustaining.
Compare subcritical.

Australian English dictionary. 2014.

Look at other dictionaries:

  • Supercritical — may refer to:* Critical mass, the smallest amount of fissile material needed for a sustained nuclear chain reaction * Critical temperature, Tc, the temperature above which distinct liquid and gas phases do not exist * Supercritical fluid, a… …   Wikipedia

  • supercritical — [so͞o΄pər krit′i kəl] adj. 1. Chem. designating or of a fluid at a temperature greater than its critical temperature 2. Nuclear Physics designating or of a highly unstable mass of fissionable material in which the total number of free neutrons… …   English World dictionary

  • supercritical — adjective Date: 1934 being or having a temperature above a critical temperature < supercritical fluid > …   New Collegiate Dictionary

  • supercritical — supercritically, adv. supercriticalness, n. /sooh peuhr krit i keuhl/, adj. 1. extremely critical. 2. Physics. pertaining to a mass of radioactive material in which the rate of a chain reaction increases with time. [1600 10; SUPER + CRITICAL] * * …   Universalium

  • supercritical — adjective a) (of a gas) Above its critical temperature and critical pressure b) Above the speed of sound …   Wiktionary

  • supercritical — adjective Physics greater than or above a critical threshold such as critical mass or temperature …   English new terms dictionary

  • supercritical — su·per·critical …   English syllables

  • supercritical — adj. Physics of more than critical mass etc …   Useful english dictionary

  • Supercritical fluid extraction — (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample …   Wikipedia

  • Supercritical water oxidation — or SCWO is a process that occurs in water at temperatures and pressures above a mixture s thermodynamic critical point. Under these conditions water becomes a fluid with unique properties that can be used to advantage in the destruction of… …   Wikipedia

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