Webster’s Revised Unabridged Dictionary · 1913
Introsusception
In′tro·sus·cep′tion (·sŭs·sĕp′shŭn), n. 1. The act or process of receiving within.
The person is corrupted by the introsusception of a nature which becomes evil thereby. Coleridge.
2. (Med.) Same as Intussusception.