Posttranslational Definition
 pōsttrăns-lāshə-nəl, -trănz- 
    adjective
  
 Of or relating to a substance or process, such as the addition of sugar groups to form a glycoprotein, that occurs or is formed after translation of protein.
 A posttranslational modification.
 American Heritage Medicine 
(genetics, biochemistry) Of or pertaining to the period after a protein has been translated from mRNA.
Wiktionary 
Origin of Posttranslational
-  post- +"Ž translational From Wiktionary 
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