ER - Definition and Overview

ER or er may stand for:

• Elizabeth Regina (Elizabeth the Queen); see Elizabeth I of England and Elizabeth II of the United Kingdom.
• An emergency room in a hospital, wherein victims arrive in emergency situations (usually by ambulance) or much to the dismay of emergency physicians and nurses, when they have a minor illness but are unable to see a family doctor.
  • ER, a popular NBC medical drama set primarily in an emergency room.
  • E/R, a less successful 1980s sitcom also set in an emergency room.
• The biblical figure Er, the eldest son of Judah.
• The endoplasmic reticulum in cell biology, which can be either rough or smooth.
• An entity-relationship diagram, which is a way of visualizing a database's table layout.
• The ISO country code for Eritrea.
• The chemical symbol for Erbium.
• Er (Р), a letter in the Cyrillic alphabet.
• The English sound "er," indicating hesistation, similar to huh and other speech disfluencies.
• In baseball, an earned run; a run that was scored without the aid of an error by the fielding team.