ingression

English

Etymology

ingress +‎ -ion

Pronunciation

• IPA^(key): /ɪnˈɡɹɛʃən/

Noun

ingression (countable and uncountable, plural ingressions)

1. The act or process of entering or intruding.

   ingression of the sea onto land

2. (metaphysics) The process by which a potentiality enters into actuality.
   • 1967, Whitehead's Metaphysics, Edward Pols‎^[1], page 164:

     […] it is by virtue of the individual essence that an eternal object remains precisely the same eternal object through all its ingressions […]

3. (biology) The inward migration of cells from the blastula during gastrulation.
   • 1940, Libbie Henrietta Hyman, The Invertebrates, page 496:

     Ingression of ectodermal cells from the area between the velar lobes establishes the cerebral ganglia and similar ingressions produce the other ganglia.

Related terms

• ingressive
• ingressor
• aggression
• egression
• progression
• transgression

Anagrams

• nigrosines