- not reversible; incapable of being changed: His refusal is irreversible.
Origin of irreversible
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for irreversibly
Some critics worry that reform would be like an on/off switch—suddenly and irreversibly changing America forever.The House GOP’s Big Immigration Fail
June 5, 2014
As a race, the Southern Caucasian would be irreversibly doomed.The Color Line
William Benjamin Smith
For why should men do either, when all they can desire is irreversibly predestined?
St. Paul's heart is pledged irrevocably and irreversibly to the Church.
The real man is discovered, his worth is impartially weighed, his rank is irreversibly decreed.Hidden Treasures
Harry A. Lewis
To say nothing of the question of how much of Terra's best blood do you want to drain off, irreversibly and permanently?Masters of Space
Edward Elmer Smith
- not able to be reversedthe irreversible flow of time
- not able to be revoked or repealed; irrevocable
- chem physics capable of changing or producing a change in one direction onlyan irreversible reaction
- thermodynamics (of a change, process, etc) occurring through a number of intermediate states that are not all in thermodynamic equilibrium
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
Word Origin and History for irreversibly
Online Etymology Dictionary, © 2010 Douglas Harper