Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym E621 is...

E621 is

  • Monosodium glutamate

E621 is also in:

Acronym Definition Searched: EAO 59526 NNC FC CPOM GTY XPRL ASAP TIN GCI RLU MARC AAHA LINF 04081