- ingress, immersion - (astronomy) the disappearance of a celestial body prior to an eclipse
--1 is a kind of disappearance
--1 is a part of eclipse, occultation
Antonyms: egress, emersion
- entrance, entering, entry, ingress, incoming - the act of entering; "she made a grand entrance"
--2 is a kind of arrival
--2 has particulars:incursion; intrusion; irruption; entree; registration, enrollment, enrolment; penetration; admission, admittance