Final answer:
The abbreviation NPO stands for Nothing by mouth. This term is commonly used in medical settings to indicate that a patient should not consume any food or drink orally, often before a medical procedure or surgery.
Step-by-step explanation:
The abbreviation NPO stands for Nothing by mouth. This term is commonly used in medical settings to indicate that a patient should not consume any food or drink orally, often before a medical procedure or surgery. It is important for patients to follow this instruction to ensure their safety and the success of the procedure.