Glycogen (noun)

1. A polysaccharide of glucose that is the main form of carbohydrate stored in the liver and muscles of animals and is the reserve carbohydrate in the body.
2. A complex sugar that is stored in the liver and muscles and can be broken down to release glucose when needed for energy.

Origin:

Mid 19th century: from greek glukus "sweet" + -gen.

Examples:

1. The body converts excess glucose into glycogen for storage.
2. Glycogen is the stored form of glucose, the body's primary energy source.
3. During exercise, the body breaks down glycogen to produce energy.
4. Glycogen is stored in the liver and muscles, it helps to maintain blood sugar levels.
5. Glycogen is a complex carbohydrate that is broken down into glucose when the body needs energy.