Vaseline
n.
1872, trademark for an ointment made from petroleum and marketed by Chesebrough Manufacturing Co., coined from German Wasser "water" + Greek elaion "oil" + scientific-sounded ending -ine. Robert A. Chesebrough was of the opinion that petroleum was a product of the underground decomposition of water.
The name is of mixed origin, being derived from Wasser, water, and elaion [Greek in the original], oil (water-oil), and indicates the belief of the discoverer that petroleum, the mother of Vaseline, is produced by the agency of heat and pressure from the carbon of certain rocks, and the hydrogen of water. ["The Monthly Review of Dental Surgery," February 1877]