E number (disambiguation)
E number or E code may refer to:
- E numbers, food additive codes
- e (mathematical constant), the base of the natural logarithm
- E notation, the base-10 exponential notation
- International E-road network, a numbering system for roads in Europe
- External Cause of Injury Codes, codes used to define the mechanism of death or injury
- E-numbers in physics, the elements of a Clifford algebra in Arthur S. Eddington's "fundamental theory"
See also
- E-series of preferred numbers for numbers used in electronics
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