ER
WordNet
noun
(1) A room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment
(2) A trivalent metallic element of the rare earth group; occurs with yttrium
WiktionaryText
ER
- emergency room
- Elizabeth Regina.
- entity-relationship model or entity-relationship diagram.
- endoplasmic reticulum
- The statistic "Earned Run"; a run that was scored without the aid of an error by the fielding team that is charged to the pitcher responsible for allowing the runner that scored to reach base.
- The ISO country code for Eritrea.
- Eritrea, a member state of the United Nations.