Noun ingress has 2 senses
  1. 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
  2. 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