aludel

[In Fr. aludel; Gr. a, and Lat. lutum mud, clay, potter's earth. Without clay; without luting.] A subliming pot used for chemical purposes, without a bottom, but which was fitted into a second, and that into a third, and so on, without luting being required. The complex ve el thus made was used in sublimations. At the bottom of the furnace a pot was placed to hold the substance which had to be sublimed, and at the top a head was added for the purpose of retaining the vapour which might arise from the proce . (Quincey.) ăl'-ŭ-lạ, s. [Dimin. of Lat. ala = a wing.] A little wing.] Entom .: (1) One of the two minute membraneous scales situated above the halteres in some dipterous insects. (2) One of the similar scales placed under the elytra of certain water-beetles.