olemus tähisena
E = 14₁₀ kuueteistkümnendsüsteemis (in hexadecimal)
E = exa-
E = energia (energy)
e = Euleri arv (Euler's constant)
e = elementaarlaeng (elementary charge)
e- = elektrooniline; elektron- (electronic)

vt ka
https://en.wikipedia.org/wiki/E_(disambiguation)