Prescriptions, for short

RXS

Think of the shorthand doctors scribble at the top of medication orders.

The clue "Prescriptions, for short" is asking for an abbreviated term commonly used for medical prescriptions. "RX" is the standard shorthand for "prescription," derived from the Latin word recipere (meaning "to take"). Since the clue is plural ("prescriptions"), the answer adds an "S" to make it "RXS," following crossword convention for pluralizing abbreviations.