1an instruction written by a medical practitioner that authorizes a patient to be issued with a medicine or treatment:he scribbled a prescription for tranquillizers [mass noun]:the lotion is available on prescription
[mass noun] the action of prescribing a medicine or treatment:the unnecessary prescription of antibiotics
a medicine or remedy that is prescribed:I’ve got to pick up my prescription from the chemist’s
2a recommendation that is authoritatively put forward:effective prescriptions for sustaining rural communities
3 (also positive prescription) [mass noun] Law the establishment of a claim founded on the basis of a long or indefinite period of uninterrupted use or of long-standing custom.
late Middle English (as a legal term): via Old French from Latin praescriptio(n-), from the verb praescribere(see prescribe). sense 1 dates from the late 16th century
prescription in other Oxford dictionaries
Definition of prescription in the US English dictionary