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EntityQ683745· pop 10· linked from 24 articles

In alchemy, nigredo, or blackness, means putrefaction or decomposition. Many alchemists believed that as a first step in the pathway to the philosopher's stone, all alchemical ingredients had to be cleansed and cooked extensively to a uniform black matter.

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  • Cultural references
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In alchemy, nigredo, or blackness, means putrefaction or decomposition. Many alchemists believed that as a first step in the pathway to the philosopher's stone, all alchemical ingredients had to be cleansed and cooked extensively to a uniform black matter.

In analytical psychology, the term became a metaphor for "the dark night of the soul, when an individual confronts the shadow within."

Excerpted from Wikipedia’s “nigredo” article, available under the CC BY-SA 4.0 licence.