emersion

[ih-mur-zhuh n, -shuh n] /ɪˈmɜr ʒən, -ʃən/
noun
1.
Also called egress. Astronomy. the emergence of a heavenly body from an eclipse, an occultation, or a transit.
Compare immersion (def 5).
2.
Archaic. the act of emerging.
Origin
1625-35; < Latin ēmers(us) (past participle of ēmergere to emerge) + -ion
Related forms
reemersion, noun
Can be confused
emersion, immersion.
British Dictionary definitions for emersion

emersion

/ɪˈmɜːʃən/
noun
1.
the act or an instance of emerging
2.
(astronomy) Also called egress. the reappearance of a celestial body after an eclipse or occultation
Word Origin
C17: from Latin ēmersus, from ēmergere; see emerge
Word Origin and History for emersion
n.

1630s, noun of action from past participle stem of Latin emergere (see emerge). Originally of eclipses and occultations.