'prescriptivism' definitions:

Definition of 'prescriptivism'

From: WordNet
noun
(ethics) a doctrine holding that moral statements prescribe appropriate attitudes and behavior
noun
(linguistics) a doctrine supporting or promoting prescriptive linguistics

Definition of 'prescriptivism'

From: GCIDE
  • prescriptivism \pre*scrip"tiv*ism\, n. The doctrine that acceptable grammatical rules should be prescribed by authority, rather than be determined by common usage. [PJC]