IPA: //fɪʃəˈnæbɪlɪti//
KK: /ˌfɪʃəˈnæbɪlɪti/
The quality or degree of being able to undergo fission, which is the process of splitting an atomic nucleus into smaller parts.
The fissionability of certain isotopes makes them suitable for use in nuclear reactors.
Fissionability → It is formed from "fission" (from Latin "fissio", meaning a splitting or division) and "-ability" (meaning the quality of being able to). The word "fissionability" refers to the quality or capability of undergoing fission, or splitting apart.
Think of the word 'fission' which means to split, and '-ability' which indicates the quality of being able to do something. This helps you remember that 'fissionability' is about the ability to split.