Final answer:
The medical term referring to a point of reference that divides the body into right and left halves is the sagittal plane.
Step-by-step explanation:
The medical term referring to a point of reference that divides the body into right and left halves is the sagittal plane. The sagittal plane is a 2-dimensional, vertical plane that divides the body or an organ into right and left sides. If this plane runs down the middle of the body, it is called the midsagittal or median plane.