TERMIUM Plus®

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METASTABLE [3 records]

Record 1 2012-05-24

English

Subject field(s)
  • Geochemistry
  • Mineralogy
DEF

Said of a phase that is stable with respect to small disturbances but that is capable of reaction with evolution of energy if sufficiently disturbed.

CONT

The euhedral pitchblende ... is a metastable form of pitchblende ...

CONT

At lower temperatures, diamond is indefinitely preserved in a metastable state. ... In general the more complex the structure, the greater the likelihood of metastable low-temperature modifications and hence of alternative behaviour.

French

Domaine(s)
  • Géochimie
  • Minéralogie
DEF

Se dit d'une phase minérale placée en dehors de son domaine de stabilité et susceptible de réagir dans certaines conditions.

CONT

La pechblende euédrique [...] est une forme métastable de pechblende [...]

CONT

[La cristobalite] est instable au-dessous de 1470 ºC, mais peut persister comme forme métastable, et cela est évidemment l'explication de sa rareté dans la nature.

Spanish

Campo(s) temático(s)
  • Geoquímica
  • Mineralogía
Save record 1

Record 2 2005-04-12

English

Subject field(s)
  • Chemistry
DEF

Possessing a state of pseudo-equilibrium that has a free energy higher than that of the true equilibrium state.

French

Domaine(s)
  • Chimie
DEF

Se dit d'un système chimique dont la vitesse de transformation est très faible et qui a l'apparence de la stabilité.

Spanish

Campo(s) temático(s)
  • Química
Save record 2

Record 3 2003-01-16

English

Subject field(s)
  • Psychology (General)

French

Domaine(s)
  • Psychologie (Généralités)

Spanish

Campo(s) temático(s)
  • Psicología (Generalidades)
Save record 3

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