irreversible

[ir-i-vur-suh-buh l]
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adjective

not reversible; incapable of being changed: His refusal is irreversible.

Origin of irreversible

First recorded in 1620–30; ir-2 + reversible
Related formsir·re·vers·i·bil·i·ty, ir·re·vers·i·ble·ness, nounir·re·vers·i·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for irreversibility

Historical Examples of irreversibility


British Dictionary definitions for irreversibility

irreversible

adjective

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not able to be revoked or repealed; irrevocable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
Derived Formsirreversibility or irreversibleness, nounirreversibly, adverb
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 irreversibility

irreversible

adj.

1620s, from assimilated form of in- (1) "not, opposite of" + reversible. Related: Irreversibly.

Online Etymology Dictionary, © 2010 Douglas Harper