nigredo

noun — 2 senses

noun

Etymology From Latin nigrēdō (“blackness”).

Alchemy, Pseudoscience A process of putrefaction or decomposition, one of the four major stages of the alchemical magnum opus.

Human sciences, Psychology, Sciences A term in Jungian psychology referring to mental negativity.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.