Nouns

(n)prescriptiondirections prescribed beforehand; the action of prescribing authoritative rules or directions“I tried to follow her prescription for success”
(n)prescription drug, prescription, prescription medicine, ethical druga drug that is available only with written instructions from a doctor or dentist to a pharmacist“he told the doctor that he had been taking his prescription regularly”
(n)prescriptionwritten instructions for an optician on the lenses for a given person
(n)prescriptionwritten instructions from a physician or dentist to a druggist concerning the form and dosage of a drug to be issued to a given patient

Adjectives

(a)prescriptionavailable only with a doctor's written prescription“a prescription drug”