Definition of "alcahest" [al•ca•hest]

• Alternative form of alkahest. (noun)

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• "Alchemy furnishes the theme for one tale; the protagonist seeks an alcahest, a human victim for his crucible."
• ""Can it be," with a side-glance at the newcomer, "that we have lost our -- I may not call him our quintessence or alcahest -- rather shall I say our baser ore, that at the virgin touch of our philosophical stone blushed into ruddy gold?"