Not standard. / (linguistics) Not conforming to the standard variety, or to the language as used by the majority of its speakers.

Something that is not standard.

The state or condition of being nonstandard.

unstandardized

plural of nonstandard

plural of nonstandardization

A lack of standardization.

(mathematical analysis, nonstandard analysis) A hyperreal number which is not a real number.

(mathematical analysis) Analysis founded upon the hyperreal number system, i.e., which formally defines and uses infinitesimals, especially differentials.

plural of nonstandard number