A rare or archaic term for the act of fixing, settling, or making permanent; the state of being fixed.
From Latin 'fixio' (fixation). A technical term that competed with 'fixation' but lost out in modern English.
Medieval alchemists used 'fixion' as a technical term for the moment when a liquid turned to gold—it represented the ultimate transformation and permanence, so the word was loaded with mystical meaning before chemistry became a real science.
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