athanor(redirected from Piger Henricus)
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an alchemist's oven or furnace that continuously supplies its own fuel and thereby sustains an unchanging temperature
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|Noun||1.||athanor - a furnace that feeds itself so as to maintain a uniform temperature; used by alchemists|
furnace - an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.
alchemy - a pseudoscientific forerunner of chemistry in medieval times