D defs.my
Entry 2 senses Webster, 1913

Euthanasia

/yo͞o"thənā'zhə/ · Eu·tha·na·si·a · IPA /ˌjuθəˈneɪʒə/
01 n. An easy death; a mode of dying to be desired.
  1. 1.
    An easy death; a mode of dying to be desired.
    “The kindest wish of my friends is euthanasia.” Arbuthnot.
  2. 2.
    the act or process of putting to death for humane purposes; -- used to refer to the killing of animals in order to relieve or avoid pain.