IPA: /ˌθɜːrməˈsteɪbɪlɪti/
KK: /ˌθɜrməˈsteɪbɪlɪti/
The quality or condition of being stable at high temperatures without losing structure or function.
The thermostability of the protein allows it to function effectively even in extreme heat.
Thermostability is formed from "thermo-" (from Greek "thermos", meaning heat) and "stability" (from Latin "stabilitas", meaning firmness or steadiness). The word refers to the ability of a substance to remain stable or unchanged when exposed to heat.
Think of 'heat' ('thermo-') and 'firmness' ('stability') to remember that thermostability means the ability to stay stable under heat.