ingression

Act of entering

Ingression is the act of entering or going in—the opposite of egress.

The word appears mainly in technical or formal contexts: water ingression into a building, ingression of contaminants into a system.

In philosophy, particularly Whitehead's process thought, ingression describes how eternal objects enter into actual occasions of experience.

entry

entrance

Point of access

accessRight to enter
admittancePermission to enter
portalImposing entrance or gate

threshold · doorway · gateway · foyer · vestibule · passageway · opening · approach · archway · entryway

penetration

permeation

Process of spreading throughout

infiltrationCovert entry into organization
seepageSlow fluid escape
osmosisSolvent crossing semipermeable barrier

diffusion · absorption · saturation · infusion · soaking · suffusion · interpenetration · transfusion

intrusion

trespass

Unauthorized entry onto property

encroachmentGradual intrusion on territory
invasionForcible entry into territory
incursionHostile territorial penetration

infiltration · breach · infringement · overstepping · imposition · unwelcome · interference · impingement · usurpation · pervasion

beginning

onset

Starting point of something

inceptionFounding moment
commencementAct of starting
adventNotable arrival or emergence

initiation · dawn · genesis · outset · threshold · embarkation · inauguration · introduction · induction

Opposites

direction of movement

ingressionegress

Means of departure

egression · exit · outflow · exiting · outgoing

presence/absence at a location

ingressiondeparture

Act of going away

leaving · withdrawal · retreat · exodus · evacuation

Family

progress, progression, ingredient, aggressive, progressive, aggression, regress, egress, ingress

Familiarity: Top 1,000,000
Profile: Used worldwide · Timeless · Abstract · Rated G