Ductulus is a Latin word that refers to a small duct or tube. Synonyms for ductulus can include words like canal, conduit, channel, pipe, tube, and hose. These synonyms all refer to structures that allow for the movement of fluids or gases from one location to another, whether in the body or in a mechanical system. Other possible synonyms for ductulus might include terms such as passageway, tunnel, or artery, depending on the specific context in which the word is being used. No matter which synonym is chosen, however, the term ductulus always implies a small and relatively narrow channel or passage.