E

1. the fifth letter of the alphabet.
2. a shape like that of a capital E.

   an E-shaped stately home

3. the third note of the diatonic scale of C major.

1. East or Eastern.

   139° E

2. the drug Ecstasy or a tablet of Ecstasy.

   people have died after taking E

   being busted with three Es can lead to stiff penalties

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

   the yellow colouring tartrazine (E 102)

4. (in units of measurement) exa- (10¹⁸).
5. Spain (international vehicle registration).

1. electric field strength.
2. electromotive force.
3. energy.

   E = mc²

1. euro or euros.
2. an electron.
3. the transcendental number that is the base of Napierian or natural logarithms, approximately equal to 2.71828.

prefix

variant spelling of ex-¹ (as in elect, emit ).

1. denoting something in electronic form, especially the use of electronic data transfer for information exchange and financial transactions via the internet.

   e-cash

   e-business

   e-zine

from electronic, on the pattern of email .

1. out.

   exclude

   excite

2. upward.

   extol

3. thoroughly.

   excruciate

4. denoting removal or release.

   excommunicate

   exculpate

5. forming verbs which denote inducement of a state.

   exasperate

6. forming nouns which denote a former state.

   ex-husband

   ex-convict

from Latin ex ‘out of’.