- Mathematics. a quantity or expression that is constant throughout a certain range of conditions.
Origin of invariant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for invariant
If triangles and genera are of our own production we can keep them invariant.The Meaning of Truth
At this point there exists the invariant system solid nitrile, two liquid phases, vapour.
We again obtain, therefore, the invariant system ice—salt—solution—vapour.
K is also an invariant point at which potassium iodide is in equilibrium with two liquid phases and vapour.
At this point the system is invariant, and the pressure will therefore remain constant until all the iodine has disappeared.
- maths an entity, quantity, etc, that is unaltered by a particular transformation of coordinatesa point in space, rather than its coordinates, is an invariant
- maths (of a relationship or a property of a function, configuration, or equation) unaltered by a particular transformation of coordinates
- a rare word for invariable
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 invariant
Online Etymology Dictionary, © 2010 Douglas Harper