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supercritical

supercritical

1 8.9
A state in which a nuclear chain reaction becomes stronger quickly
  • adjective
  • /ˌsuːpərˈkrɪtɪkəl/
  • Specialized
translation icon : supercrítico
  • The reaction rate would never go high enough for a supercritical chain reaction like that which occurs in an A-bomb.
  • supercritical mass

You said it went supercritical because it wasn't being cooled enough.

Examples

  • But like I said, good luck convincing someone in the US Let's build a whole fleet of these and the supercritical water reactor.

  • I strongly doubt that this is going to work, seeing that so far supercritical wells all either collapsed or blew up.

  • It'll go supercritical in a few hours, -

  • Oh, you mean a supercritical fission explosion as though from a nuclear weapon?

    Blog text (20)
  • You said it went supercritical because it wasn't being cooled enough.

  • Your implosion design simply uses a chemical high explosive to squeeze a subcritical piece of weapons-grade plutonium-239 until it's supercritical, thereby producing an atomic explosion.

  • Topics covered include Berry phase, topologically protected zero modes, Klein tunneling, vacuum reconstruction near supercritical charges, and deformation-induced gauge fields.

    Blog text (23)
  • Our model is an argument for predicting that the vanishing of the high-field driven current in the supercritical percolation regime, cf. 18, is in fact discontinuous when taking into account the backbone only.

    Academic text (2018)
  • In a supercritical state, uranium can sustain a rapid chain reaction that leads to increased energy output.

  • For the research experiment, scientists intentionally created a supercritical mass of plutonium to study its explosive potential.

Antonyms

subcritical
  • Specialized
1 7.4

Below the amount needed to keep a chain reaction going

How Critical

supercritical
  • Specialized
1 8.9
critical
  • Specialized
66 8.0
subcritical
  • Specialized
1 7.4

Surface Forms

supercritical positive

Morphology

supercritical = critical (semi-transparent) = super + critical

Formally 'super-' + 'critical' is clear, but the nuclear sense relies on a specialized technical meaning of 'critical' (criticality) that may not be accessible to general learners.

Etymology

The word supercritical has two parts: super- meaning 'above' and critical meaning 'a point where things change', which you see in the phrase 'critical moment'. In nuclear talk, it means 'above the point where a chain reaction grows', so the reaction can increase very quickly.