dnr

1. Medicine/Medical. do not resuscitate (used in hospitals and other health-care facilities to indicate to the staff the decision of a patient’s doctors and family, or of the patient by a living will, to avoid extraordinary means of prolonging life).
2. Also D.N.R. do not return.

abbreviation for

1. do not resuscitate

abbr.

1. do not resuscitate (a physician’s order to refrain from initiating a code blue)