Fatty compounds are a type of LIPID, which are molecules that contain hydrocarbons and make up the structure of living cells. The three crossword solutions for the term fatty compound are LIPID (5 letters), Lipin (5 letters), and Lecithin (8 letters). Lipids are a broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, triglycerides, phospholipids, and others. Lipin is a type of phospholipid, which is a class of lipids that contain phosphorus and are important components of cell membranes. Lecithin is a type of phospholipid found in many foods and is used as an emulsifier in food production.