One entry found for unstable.

Main Entry: un·sta·ble
Pronunciation: n-st-bl, n-
Function: adjective
1 : not stable : not firm or fixed : FLUCTUATING <unstable prices> <an unstable tower> <unstable weather>
2 : readily changing in chemical composition or physical state or properties (as by breaking down into parts) <an unstable atomic nucleus>

Pronunciation Symbols