ER Say: ee-ahr Short for emergency room, this is the part of the hospital where kids and adults go if they suddenly have a big health problem or accident. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.