aludel
n. திடப்பொருளை நேராக ஆவியாய் மாற்ற உதவும் கலயம்,
Al"u*del, n. Etym: [F. & Sp. aludel, fr. Ar. aluthal.] (Chem.) Defn: One of the pear-shaped pots open at both ends, and so formed as to be fitted together, the neck of one into the bottom of another in succession; -- used in the process of sublimation. Ure.