Ampul is a medical term that refers to a small glass or plastic container used for storing and administering a liquid medication. This term is mostly used in the medical field, but there are several synonyms that can be used in place of the word ampul. Some common synonyms for ampul include vial, ampoule, phial, and small bottle. These words all refer to a small container that is used to store and administer liquid medication. They vary in spelling and pronunciation, but they all serve the same purpose in the medical industry. Using synonyms can help vary your language, making your writing or conversation more interesting.