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Found one definition

1.                 From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   TPP /tˌiːpˌiːpˈiː/
   Thiamindiphosphat <neut>, Thiaminpyrophosphat <neut>, Aneurinpyrophosphat <neut>, Kokarboxylase <fem>, Cocarboxylase <fem> [biochem.]  [pharm.]
      Synonyms: thiamin pyrophosphate, thiamin diphosphate, aneurin diphosphate, cocarboxylase
            Note: thiamin pyrophosphate