IPA: /njuːˈkleɪʃən/
KK: /nukˈleɪʃən/
The process of forming small clusters or nuclei that can lead to a larger structure or phase change.
Nucleation is essential in the formation of clouds in the atmosphere.
Nucleation → It is formed from "nucleus" (from Latin "nucleus", meaning kernel or seed) and the suffix "-ation" (meaning the process of). The word "nucleation" refers to the process of forming a nucleus or center around which something develops.
Think of a 'kernel' or 'seed' ('nucleus') that starts a process ('-ation') — that's how nucleation means the process of forming a center.