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).
Also D.N.R. do not return.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for dnr
Told by a Ukrainian that the DNR were in Novotroitske, a guardsman said, “We know.”
DNR leaders admitted that foreign aid workers in the Donetsk region had good reasons to be concerned about their safety.
do not resuscitate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
do not resuscitate (a physician's order to refrain from initiating a code blue)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.