The term 'IT MAY BE BURNED' can be solved by the three letter word 'FAT'. FAT is a type of lipid, which is a type of organic compound that is made up of carbon, hydrogen, and oxygen atoms. It is an essential nutrient for humans and other animals, and it is found in many foods such as butter, cheese, and meats. FAT can also be burned as a fuel source, which is why it is included in the crossword puzzle.