Prescription (noun)

1. A written order for a medicine or treatment, issued by a doctor or other medical practitioner.
2. An instruction or direction, particularly one issued by an authority or professional.
3. A course of action or treatment that is recommended or ordered.

Origin:

From latin praescriptus, past participle of praescribere ("to prescribe"), from prae ("before") + scribere ("to write").

Examples:

1. He filled his prescription at the pharmacy.
2. She had to renew her prescription for her medication.
3. The doctor gave him a prescription for a new painkiller.
4. The company's policy is a prescription for success.
5. The teacher gave the students a prescription of tasks to complete over the summer.