E621

Last updated March 18, 2025

E621 may refer to:

Rail vehicles

FS Class E.621, an Italian electric locomotive class
E621, a designation for a railcar type used in the Japanese E6 Series Shinkansen electrical multiple unit

Other uses

Monosodium glutamate, a food flavour enhancer (labelled E621 in the EU)
e621 (website), a booru-style furry fandom imageboard

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