IPA: /ɪˈmɜːrʒən/
KK: /ɪˈmɜrʒən/
The act of coming out or rising up from a hidden or enclosed place.
The emersion of the sun from behind the clouds signaled the start of a beautiful day.
Emersion is formed from "e-" (meaning out) and "mergere" (meaning to dip or plunge). The word describes the act of coming out of a submerged state, particularly in reference to the emergence of celestial bodies from behind another object.
Think of something 'coming out' ('e-') from being 'dipped' ('mergere') — that's why emersion means to emerge from being submerged.