Es

symbol

the chemical element einsteinium.

1. forming plurals of nouns ending in sibilant sounds.

   boxes

   kisses

2. forming plurals of certain nouns ending in -o.

   potatoes

   heroes

variant of -s¹.

1. forming the third person singular of the present tense in verbs ending in sibilant sounds.

   pushes

2. forming the third person singular of the present tense in verbs ending in -o (but not -oo ).

   goes

variant of -s².

abbreviation, symbol

El Salvador (international vehicle registration).

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).

noun, symbol

the chemical element of atomic number 99, a radioactive metal of the actinide series. Einsteinium does not occur naturally and was discovered in 1953 in debris from the first hydrogen bomb explosion.

1950s: from the name of Albert Einstein, Albert + -ium.