ER

1. (international standards)ISO 3166-1alpha-2country code forEritrea since 1993.

   Synonym:ERI(alpha-3)

EnglishWikipedia has an article on:

ER

Wikipedia

• E.R.,E. R.(does not apply to Erie)

Abbreviation

ER

1. Initialism ofElizabethRegina(“Queen Elizabeth”).

   Synonym:EIIR

2. (British)Initialism ofEdwardRex(on coins, letterboxes, etc.)Theroyal cypher forEdward VII, king of Great Britain

   Synonym:EVIIR

3. (US politics)Initialism ofEleanor Roosevelt.
4. (US sports)Abbreviation ofErie(“Erie, Pennsylvania, USA”).

ER (countable anduncountable,pluralERs)

1. (baseball)Initialism ofearned run.

   Coordinate term:ERA

2. (biology)Initialism ofendoplasmic reticulum.
3. (computing)Initialism ofentity-relationship.

   Alternative form:E-R

   Hyponym:EER

4. (medicine)Initialism ofemergency room.
5. (biochemistry)Initialism ofestrogenreceptor.
6. (physics)Initialism ofEinstein-Rosen bridge.

   Alternative form:E-R

   Coordinate term:EPR

7. (military)Initialism ofenhancedradiation.

• 're,RE,Re,Ré,r.e.,re,re-

ER ?

1. (sports)abbreviation ofErie

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