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Fat

(Science: biochemistry) a triglyceride (lipid) that is usually solid at room temperature.

Compare: oil. Excess bodily weight; she found fatness disgusting in herself as well as in others.Containing or composed of fat; fatty food; fat tissue.A soft greasy substance occurring in organic tissue and consisting of a mixture of lipids (mostly triglycerides); pizza has too much fat.A kind of body tissue containing stored fat that serves as a source of energy; adipose tissue also cushions and insulates vital organs; fatty tissue protected them from the severe cold.Found in most organisms, fat contains twice as much energy as a carbohydrate, and is stored by the body due to this. There are many different types of fats, otherwise known as triglycerides, which have various different functions in the body.