The prefix "dacry/o" is associated with which substance?

The prefix "dacry/o" specifically refers to tears. This term originates from the Greek word "dakryon," which means tear. In medical terminology, it is commonly used in various contexts related to the tear glands or pathways, such as dacryocystitis (inflammation of the tear sac) and dacryostenosis (narrowing of the tear duct). Understanding medical prefixes is essential for grasping the meanings of terms in clinical settings, particularly those involving the eyes and tear production.