IPA: /ɛkˈsloʊʃən/
KK: /ɛkˈslouʃən/
The process where a solution of molten rocks breaks apart into its different parts as it cools down, or where substances separate from a solid crystal.
During the cooling of magma, exsolution can occur, leading to the formation of different minerals.
Exsolution → It is formed from "ex-" (meaning out of or from) and "solutio" (from Latin, meaning a loosening or solution). The word describes the process of a substance being released or separated from a solution.
Think of something being 'released' ('ex-') from a 'solution' ('solutio') — that's what exsolution means.