English Dictionary
Define dictionary terms easily — search for "example", "dictionary", "language", or "word" in our powerful online English dictionary.
Define dictionary terms easily in our powerful online English dictionary.
Searching for...
No matching words found
Try a different search term or browse the 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.