Fossilization definition

Fossilization means that usage errors have become embedded (i.e., habitual) in L2 learners’ language production. It occurs when learners get no corrective feedback. (Azar, 2012)
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Fossilization means that the learners are "prematurely plateaued"; i.e., they have reached a certain point in their acquisition and do not develop further.
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Examples of Fossilization in a sentence

  • Fossilization in steady state grammars: Persistent problems with inflectional morphology.

  • Fossilization in steady state L2 grammars: Persistent problems with inflectional morphology.