# invariant

[in-vair-ee-uh nt]

### adjective

unvarying; invariable; constant.

Mathematics. normal(def 5e).

### noun

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. 2019

## Related Words for invariant

right, constant, stable, level, steady, straight, invariable, smooth, equal, same, plumb, plane, square, flush, proportional, horizontal, uniform, parallel, regular, stabile## Examples from the Web for invariant

### Historical Examples of invariant

If triangles and genera are of our own production we can keep them invariant.

The Meaning of TruthWilliam James

At this point there exists the invariant system solid nitrile, two liquid phases, vapour.

The Phase Rule and Its ApplicationsAlexander Findlay

We again obtain, therefore, the invariant system ice—salt—solution—vapour.

The Phase Rule and Its ApplicationsAlexander Findlay

K is also an invariant point at which potassium iodide is in equilibrium with two liquid phases and vapour.

The Phase Rule and Its ApplicationsAlexander Findlay

At this point the system is invariant, and the pressure will therefore remain constant until all the iodine has disappeared.

The Phase Rule and Its ApplicationsAlexander Findlay

## invariant

### noun

### adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Online Etymology Dictionary, © 2010 Douglas Harper