Sonderbehandlung

Etymology
From.

The Nazis used the word as code during the early stages of the Holocaust. By the time of the creation of the extermination camps it was already too widely understood and, as a codeword, replaced by terms such as and.

Noun

 * 1)  special treatment
 * 2)  extermination, killing, extrajudicial execution
 * 1)  extermination, killing, extrajudicial execution

Usage notes

 * The literal sense is widely used and per se unproblematic. However, it should definitely be avoided in any context that is somehow suggestive of Nazism or its victims.