oleum (o'le-um)

See oil. o. cinereum. An ointment made by triturating mercury to extinction with oil or liquid paraffin, varying in the amount of mercury from i to 33 per cent. o. des till a tum. A volatile oil. o. Dippellii. See Dippel's animal oil. o. ethereum. i. See ethereal oil. 2. Of the U. S. Ph., a preparation consisting of equal volumes of heavy oil of wine and ether, o. paraffinosum. Liquid paraffin; liquid petrolatum. o. petrae. See petrolatum, o. phosphor a tum. Phosphorated oil; a clear, nearly colorle oily solution of phosphorus [Br. Ph.]. o. pin i. The oil of pine needles, 604 from Pinus pumilio. It is used by inhalation [Br. Ph., 1898]. [Lat., from Gr., elaia, the olive tree.]