aludel
/ˈaljʊdɛl
/noun
A pear-shaped earthenware or glass pot, open at both ends to enable a series to be fitted one above another, formerly used in sublimation and other chemical processes.He employed alembics for distillations and aludels for sublimations....
- The aludel was widely used in Isaac Newton's day for heating various chemicals.
- The similarity in principle between the aludel and furnace described above, and the uthal and mustauqad of the last pages of our analysis, proves that so far as instruments are concerned, he has over-estimated the inventive capacity of the Middle Ages.
Origin
Late Middle English: from Old French alutel, via Spanish from Arabic al-'uṯāl 'the sublimation vessel'.