Final answer:
In the term diplopia, diplo- means double.
Step-by-step explanation:
In the term diplopia, diplo- refers to 'double.' Diplopia is the medical term for double vision, which can arise from various medical conditions.
Diplopia is a medical term used to describe the condition commonly referred to as double vision, where an individual sees two images of a single object. This condition can be caused by various factors, such as misalignment of the eyes (strabismus), lens opacity (cataracts), or neurological disorders.