Conjunction
Category: ACTOR_TERM
Conjunction (coniunctio) was an alchemical operation in which two purified substances — typically philosophical sulfur and philosophical mercury, or the 'red king' and 'white queen' in allegorical terms — were combined to produce the unified matter from which the Philosopher's Stone would be elaborated. This is an ACTOR_TERM: historical practitioners named and performed this operation explicitly.
See the process essay: Conjunction