metathetic

/ˌmɛtəˈθɛtɪk/
adjective
  1. Relating to or involving metathesis, the swapping of sounds, letters, or chemical groups.
    • The metathetic change from 'brid' to 'bird' happened centuries ago.
    • Linguists study metathetic patterns in different languages around the world.
    • This metathetic reaction in chemistry requires a special catalyst.
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