assisted suicide

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Suicide committed with the aid of another person, sometimes a physician.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Suicide with the help of another person; especially suicide of a terminally ill person with the help of a physician; euthanasia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun suicide of a terminally ill person that involves an assistant who serves to make dying as painless and dignified as possible