self-reference

circular reference – A series of references where the last object references the first

Droste effect – Recursive visual effect

Mise en abyme – A formal technique of placing a copy of an image within itself

Fourth wall – Concept in performing arts separating performers from the audience

List of self–referential paradoxes

recursion – Process of repeating items in a self-similar way

recursive acronym – Acronym whose expansion includes a copy of itself

strange loop – Cyclic structure that goes through several levels in a hierarchical system.

this (computer programming) – In programming languages, the object or class the currently running code belongs tot

Woozle effect – False credibility due to quantity of citations

Bilingual tautological expressions – Use of more words than is necessary for clear expression

Lucid dreaming – A dream during which the dreamer is aware that they are dreaming