ingress

Etymology

From Latin ingressus, from the verb ingredior.

noun

1. The act of entering.
   Accordingly, anti-Israeli terrorists turned to city transport. Railway systems depend on easy ingress and egress at numerous points along the route. 2005-07-22, Mark Lawson, “Public enemy number two”, in The Guardian, →ISSN
2. Permission to enter.
   All ingress was prohibited.
3. A door or other means of entering.
4. (astronomy) The entrance of the Moon into the shadow of the Earth in eclipses, or the Sun's entrance into a sign, etc.

verb

1. (intransitive) To intrude or insert oneself
   "Were you asleep? Did I disturb you?" he would ask, seeing Fyodor flat on his back on the sofa, and then, ingressing entirely, he would shut the door tightly behind him and sit by Fyodor 's feet 1963, Vladimir Nabokov, The Gift: A Novel, page 198
   When the tub was full I ingressed into the water gently, insinuating my body in a bit at a time, enjoying the sensual pleasure of the extreme heat on the lower part of my body […] 2001, Lynda Schor, “My Death”, in Moyra Davey, editor, Mother Reader, page 310
2. (transitive, US, chiefly military) To enter (a specified location or area)
   "We ingressed North Vietnam over Cam Pha on a westerly heading," reported Captain Madden. 1976, The United States Air Force in Southeast Asia: Aces and Aerial Victories, page 108
   We were ingressing the target area. 1998, Michael William Donnelly, Falcon's Cry, page 93
3. (intransitive, astrology, of a planet) To enter into a zodiacal sign
   The middle of March finds " Mars ingressing upon the 16th degree of Capricorn, where the sun has arrived in the nativity of Lord Palmerston," […] December 28, 1861, “Almanacs”, in All the Year Round, volume VI
4. (Whiteheadian metaphysics) To manifest or cause to be manifested in the temporal world; to effect ingression