metathesis

• اسم يدل على عملية تبديل أو إحلال، ويُستخدم في اللسانيات للدلالة على تبديل موضع الأصوات أو المقاطع في الكلمة، وفي الكيمياء على تفاعل تتبادل فيه أجزاء من مركبين لتكوين مركبات جديدة.

A noun referring to a process of transposition or exchange, used in linguistics for the rearrangement of sounds or syllables within a word, and in chemistry for a reaction where parts of two compounds are swapped to form new compounds.

1. Linguistic transpositionC2formal

   The transposition of sounds, syllables, or letters within a word, or words within a sentence.

   القلب المكاني

   • The word 'ask' was historically pronounced 'aks' due to metathesis.
   • Metathesis is common in many languages, such as in the Spanish word 'palabra' from Latin 'parabola'.
   • In English, 'comfortable' is often pronounced 'comfterble' because of metathesis.

   المرادفاتinterchangepermutationreversalshifttransposition

2. C2formalscientific

   A chemical reaction between two compounds where parts of each are interchanged to form two new compounds (AB + CD = AD + CB).

   تفاعل الاستبدال المزدوج

   • The reaction between silver nitrate and sodium chloride is a classic example of metathesis.
   • Metathesis reactions are fundamental in organic chemistry for creating new carbon-carbon bonds.
   • The chemist studied the metathesis process to synthesize a new polymer.