Which abbreviation is used to indicate a prescription in medical terms?

The abbreviation used to indicate a prescription in medical terms is "RX." This abbreviation comes from the Latin word "recipe," meaning "to take" or "to take as directed." In a medical context, it signifies a doctor's order for medication or treatment, serving as a universal symbol for prescriptions.

Understanding this abbreviation is essential for anyone involved in healthcare as it directly relates to the dispensing and communication of medications. Other options, while they represent important terms in medicine, do not specifically indicate prescriptions. For example, "QID" refers to a dosage frequency meaning "four times a day," "q2h" indicates a timing of every 2 hours, and "ROS" stands for "Review of Systems," which relates to patient assessments rather than prescriptions. Thus, "RX" stands out as the correct choice for indicating prescriptions.