In medical terminology, Rx is an abbreviation that stands for a prescription. The symbol "Rx" is derived from the Latin word "recipe" meaning "to take". It is customarily part of the superscription (heading) of a prescription. When a physician or other licensed healthcare provider writes “Rx” on processing a prescription or medical order, it indicates that the patient should receive a specific medication or treatment as part of their care plan. The “Rx meaning” may include information such as the name and dosage of the medication, instructions for use, the route of administration, and the frequency of a dosage. Overall, Rx is an essential abbreviation used in medicine to represent a prescription or a medication order.