Grimm's law

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Named for Jacob Grimm.


Grimm's law (uncountable)

  1. (linguistics) A sound change that affected the Proto-Indo-European stop consonants in the development of Proto-Germanic, causing devoicing or change into a fricative.
  2. (linguistics) The description of this sound change (as originally formulated by Jacob Grimm), which establishes a set of regular correspondences between early Germanic stops and fricatives, and the consonants of Proto-Indo-European and most other Indo-European languages.