unstable(redirected from Instable)
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adj. unsta·bler, unsta·blest
a. Decomposing readily.
b. Highly or violently reactive.
a. Decaying with relatively short lifetime. Used of subatomic particles.
1 in an excited or active state, such as an atom with a nucleus possessing excess energy.
2 easily broken down or prone to decomposition.
unstableadjective Referring to the structural or physical lability or instability of a chemical or other substance during production, transportation, or storage. See Unstable reactive substance.
having a tendency to disrupt, e.g. unstable chemicals.
the principal fragments in a reduced fracture are overriding. Slow union or nonunion results.