This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A going in or entering.

n. Right or permission to enter.

n. A means or place of entering.

n. The act of entering.

n. Permission to enter.

n. A door or other means of entering.

v. To intrude or insert oneself

v. To enter (a specified location or area)

v. To enter into a zodiacal sign

v. To manifest or cause to be manifested in the temporal world; to effect ingression

n. The act of entering; entrance.

n. Power or liberty of entrance or access; means of entering.

n. The entrance of the moon into the shadow of the earth in eclipses, the sun's entrance into a sign, etc.

verb-intransitive. To go in; to enter.

n. A going in; the act of entering or passing in; entrance.

n. Provision for going in; a place of entrance: as, the ingress and egress are on opposite sides.

n. In astronomy, the entrance of the sun into a sign of the zodiac, or of a planet upon the disk of the sun in a transit; in astrology, the transit over the part of the zodiac occupied by the sun, moon, medium cæli, or ascendant.

n. In canon law. See access, 7.

To go in or enter.

In astrology, to transit the place which any of the four moderators has reached by direction.

n. the act of entering

n. (astronomy) the disappearance of a celestial body prior to an eclipse

"None of the people I talked to or heard from admitted to witnessing anything more than moderate use on L-2, light use on L-1, and none at all on launch day before cabin ingress or scrub."

egress   

disappearance   

ingress paper   

ingressor    ingressive    ingression   

entrance    enter   

egress    6to4    demand-dial    outbound    unicast    intranet    on-link    non-ip    calreticulin    transit