metastable - definition and synonyms

adjective
  1.   From our crowdsourced Open Dictionary
    in physics and chemistry, relating to a state of a chemical or physical system that is unstable but relatively long-lived provided it is not subjected to major disturbances

    Intriguingly, the measured values of the Higgs boson mass and top quark mass put the universe very close to the boundary between metastable and completely stable.

    Submitted by filz from Italy on 09/11/2014