Which combining form refers to fungus?

The combining form that refers to fungus is "myc/o." This term is derived from the Greek word "mykes," which means fungus or mold. In medical terminology, this combining form is commonly used when discussing conditions, diseases, or anatomy related to fungal infections. For instance, terms like "mycology," which is the study of fungi, or "mycosis," which refers to a fungal disease, utilize this combining form.

The other options do not relate to fungus. For example, "mydr/i" is associated with dilation, particularly in reference to pupils, while "mutat/o" pertains to mutation, often in genetic contexts. Lastly, "mort/o" relates to death. Understanding these distinctions helps clarify the vocabulary used in medical contexts, emphasizing the importance of combining forms in accurately conveying specific meanings.