n.1 the act or an instance of prescribing.
2 a a doctor's (usu. written) instruction for the composition and use of a medicine. b a medicine prescribed.
3 (in full positive prescription) uninterrupted use or possession from time immemorial or for the period fixed by law as giving a title or right.
4 a an ancient custom viewed as authoritative. b a claim founded on long use.
Phrases and idioms:
negative prescription the time limit within which an action or claim can be raised.
Etymology: ME f. OF f. L praescriptio -onis (as PRESCRIBE)