Final answer:
AD (Auricula Dexter/Auris Dextra) on a medical chart refers to the right ear. This abbreviation is crucial for clear medical communication and record-keeping in the field of otology.
Step-by-step explanation:
When you see AD (Auricula Dexter/Auris Dextra) on a chart, it refers to the right ear. The abbreviation AD is commonly used in medical contexts, specifically in otology, which is the study of the ear and its diseases. The Latin term 'Auricula Dexter' or 'Auris Dextra' translates to 'right ear', assisting healthcare professionals in quickly identifying which ear is being referenced. It's essential to understand these abbreviations for accurate medical records and communication.