Food that is digestible is food your body can break down without much trouble. Soft rice, ripe bananas, and clear soup are often called digestible; very fatty, fried, or very tough food may be called hard to digest, or indigestible. Doctors and home cooks use the word in a plain, practical way. People also stretch it: a piece of writing or a set of numbers can be digestible if it is easy to take in — not too long, not too dense. That second use is a metaphor, a bit informal, but you will meet it in newspapers and offices. The word describes the food or the idea, not the person eating.