the fifth letter of the alphabet

a shape like that of a capital E

an E-shaped stately home

the third note of the diatonic scale of C major

East or Eastern

139° E

the drug Ecstasy or a tablet of Ecstasy

people have died after taking E

being busted with three Es can lead to stiff penalties

denoting products, in particular food additives, which comply with EU regulations

the yellow colouring tartrazine (E 102)

(in units of measurement) exa- (10?)

Spain (international vehicle registration)

electric field strength

electromotive force

energy

E = mc²

euro or euros

an electron

the electric charge of an electron, approximately equal to −1.602 × 10? coulombs

the transcendental number that is the base of Napierian or natural logarithms, approximately equal to 2.71828