IPA: /ˌmɛtəˈstæbɪlɪti/
KK: /mɛtəˈstæbɪlɪti/
A condition in which a system is not in its most stable state but can remain in that state for a long time before changing.
The chemical reaction reached a state of metastability, allowing it to persist longer than expected.
Metastability is formed from "meta-" (meaning beyond or change) and "stabilis" (meaning stable). The term describes a state that is stable under small disturbances but can change to a more stable state under larger disturbances.
Think of 'meta-' meaning beyond or change, and 'stabilis' meaning stable — this helps you remember that metastability refers to a state that is stable but can change under certain conditions.