Peptic is a term used to describe DIGESTIVE disorders, such as ulcers. It is related to the DIGESTIVE process and is often used in reference to the stomach and small intestine. DIGESTIVE is a nine-letter word that describes the process of breaking down food into smaller components that can be absorbed by the body. ULCER is a five-letter word that refers to an open sore or lesion on the skin or mucous membrane, usually caused by infection or irritation.