Definition, Meaning & Synonyms

metastable

adjective
/ˌmɛtəˈsteɪbəl/
Definition
A state of a physical system that is stable but not in its most stable form, allowing for the possibility of transition to a more stable state.
Examples
  • The nucleus of the atom can exist in a metastable state before it undergoes radioactive decay.
  • Metastable phases in materials science can affect the properties of substances at different temperatures and pressures.
  • The metastable equilibrium of the ice in water can lead to interesting phenomena during freezing.
Meaning
In scientific contexts, particularly in physics and chemistry, ‘metastable’ describes a state where a system is stable for a significant amount of time, but can transition to a more stable configuration under certain conditions.
Synonyms
  • quasi-stable
  • stable
  • transitory