a document written by someone still legally capable requesting that he should be allowed to die if subsequently severely disabled or suffering terminal illness
"after he discovered he had AIDS he drew up a living will"
A document, made by a person when still legally fit to do so, which provides clear instructions or principles to be employed by a surrogate decision-maker, such as expressing a desire to be allowed to die instead of being kept alive by artificial means, in the event of being severely disabled or suffering from a terminal illness.