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circumincession

American  
[sur-kuhm-in-sesh-uhn] / ˌsɜr kəm ɪnˈsɛʃ ən /
Or circuminsession

noun

Theology.
  1. the reciprocal existence in one another of the three persons of the Trinity.


Etymology

Origin of circumincession

1635–45; < Medieval Latin circumincessiōn- (stem of circumcessiō ), equivalent to Latin circum- circum- ( def. ) + Medieval Latin incessiōn- < Latin incess ( us ) (past participle of incedere to give in, to go along with, equivalent to in- in- 2 + cēd ( ere ) to go + -tus past participle suffix) + -iōn- -ion; see cede, cession