[ yoo-thuh-nahyz ]
/ ˈyu θəˌnaɪz /

verb (used with object), eu·tha·nized, eu·tha·niz·ing.

to subject to euthanasia: to euthanize injured animals.
Also eu·than·a·tize [yoo-than-uh-tahyz] /yuˈθæn əˌtaɪz/; especially British, eu·tha·nise, eu·than·a·tise.

Origin of euthanize

First recorded in 1960–65; euthan(asia) + -ize Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for euthanize

  • The three-drug formula, Alper writes, is “less reliable, and therefore less humane, than the method used to euthanize animals.”

    Executed Like a Dog|Ben Crair|November 13, 2010|DAILY BEAST

British Dictionary definitions for euthanize


euthanise Austral euthanaze or euthanase (ˈjuːθəˌneɪz)

/ (ˈjuːθəˌnaɪz) /


(tr) to kill (a person or animal) painlessly, esp to relieve suffering from an incurable illness

Word Origin for euthanize

C20: back formation from euthanasia
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