irreversible

adjective

ir·​re·​vers·​ible ˌir-i-ˈvər-sə-bəl How to pronounce irreversible (audio)
: not reversible
irreversibility noun
irreversibly adverb

Examples of irreversible in a Sentence

He suffered an irreversible loss of vision. The crisis has done irreversible harm to the countries' relations.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Nevertheless, the data is a glaring reminder that the planet is inching closer to irreversible damage. Rachel Frazin, The Hill, 14 Jan. 2025 The Japanese Foreign Ministry has warned that the country has until about 2030 before the trend is irreversible. Paul Du Quenoy, Newsweek, 9 Jan. 2025 For now, doctors have a new tool to help curb syphilis — a disease more frequently causing life-long, irreversible and potentially lethal damage to babies. Bloomberg, The Mercury News, 8 Jan. 2025 Black and Hispanic people, who have higher rates of chronic diseases and are more likely to be uninsured, are also known to experience a higher prevalence of glaucoma, a disease that damages the optic nerve and is the leading cause of irreversible blindness. Michelle Marchante, Miami Herald, 2 Jan. 2025 See all Example Sentences for irreversible 

Word History

First Known Use

1630, in the meaning defined above

Time Traveler
The first known use of irreversible was in 1630

Dictionary Entries Near irreversible

Cite this Entry

“Irreversible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irreversible. Accessed 22 Jan. 2025.

Kids Definition

irreversible

adjective
ir·​re·​vers·​ible ˌir-i-ˈvər-sə-bəl How to pronounce irreversible (audio)
: impossible to reverse
an irreversible chemical reaction
irreversible damage
irreversibility noun
irreversibly adverb

Medical Definition

irreversible

adjective
ir·​re·​vers·​ible ˌir-i-ˈvər-sə-bəl How to pronounce irreversible (audio)
: incapable of being reversed : not reversible
an irreversible medical procedure
: as
a
: impossible to make run or take place backward
irreversible chemical syntheses
b
of a colloid : incapable of undergoing transformation from sol to gel or vice versa
c
of a pathological process : of such severity that recovery is impossible
irreversible brain damage
irreversibility noun
plural irreversibilities
irreversibly adverb

Legal Definition

irreversible

adjective
ir·​re·​ver·​si·​ble ˌir-rə-ˈvər-sə-bəl How to pronounce irreversible (audio)
: not reversible
an irreversible decision

More from Merriam-Webster on irreversible

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!