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Meaning of nonstandard

non•stand•ard

Pronunciation: (non'stan'durd), [key]
— adj.
  1. not standard.
  2. not conforming in pronunciation, grammar, vocabulary, etc., to the usage characteristic of and considered acceptable by most educated native speakers; lacking in social prestige or regionally or socially limited in use:Cf.(def. 27). a nonstandard dialect; nonstandard English.
  3. of or pertaining to a generalized system of numbers that includes the real numbers but also includes infinite and infinitesimal numbers: nonstandard analysis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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